{"title":"Haldex \u0026 4x4 ECUs","description":"\u003cp\u003eExplore our range of Haldex control units (ECUs) for all generations and vehicle brands, including Audi, Volkswagen, Škoda, Seat, Volvo, Land Rover, BMW and other. Each unit is tested and ready for installation, ensuring reliable AWD system performance.\u003c\/p\u003e","products":[{"product_id":"haldex-control-unit-0bs907554d-used","title":"0BS907554D Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used OEM 0BS907554D Haldex control unit for Gen 4 AWD. Original Continental module for Audi, VW, Skoda and SEAT vehicles with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BS907554D, 0BS598554D, Haldex control unit, HAP542, 5WP33527-01, SW 4017, HW H43, Gen 4 Haldex, Continental, Passat, Tiguan, Sharan, Q3, TT, Octavia, Superb, Alhambra, Caddy, Golf, Passat CC\"\u003e\n \u003ctitle\u003e0BS907554D Haldex Control Unit Gen 4 | Used OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0BS907554D\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BS907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33527-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 4017 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n This is a genuine used OEM Haldex control unit that has been bench tested and confirmed fully functional. It is supplied as a reliable replacement for a faulty original module and helps restore correct rear differential and AWD operation in Gen 4 Haldex systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554D  •  0BS598554D  •  HAP542  •  5WP33527-01  •  SW 4017  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554  •  0BS907554A  •  0BS907554B  •  0BS907554C  •  0BS907554D  •  0BS598554  •  0BS598554A  •  0BS598554B  •  0BS598554C  •  0BS598554D  •  5WP33527  •  5WP33524-01  •  5WP33524-02  •  5WP33524-03\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33527-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e4017\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BS907554D\u003c\/strong\u003e. It is a key electronic component of the fourth-generation Haldex all-wheel-drive system and is responsible for managing rear differential clutch operation and rear axle engagement when traction is needed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the rear differential clutch engagement in the AWD system\u003c\/li\u003e\n \u003cli\u003eSupports proper torque transfer to the rear axle during traction demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the AWD system and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for intermittent or complete AWD loss\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0BS907554D is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat CC\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex pump and N373 clutch control valve. Replacing the pump, valve and Haldex oil during installation is strongly recommended for reliable operation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eReplace the Haldex oil during installation\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"8be2e5ede4cbe8eaf9f8a6eee8fea5e8e4e6\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#cba2a5ada48ba8aab9b8e6aea8bee5a8a4a6\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":48634592592205,"sku":"","price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-volvo-5wp33517-02-used","title":"5WP33517-02 Haldex control unit Volvo Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 5WP33517-02 Haldex control unit for Volvo AWD models. Continental Gen 4 DEM module, HAP542 \/ 110683-01, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33517-02, 5WP3351702, HAP542, 110683-01, Volvo Haldex control unit, Volvo DEM module, XC60, XC70, XC90, V70, S60, S80, Continental, Gen 4 AWD\"\u003e\n \u003ctitle\u003e5WP33517-02 Haldex Control Unit Volvo Gen 4 | Used Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 5WP33517-02 – Volvo AWD Gen 4\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33517-02\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental DEM module for selected Volvo AWD vehicles equipped with 4th generation Haldex system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eModule Type\u003c\/strong\u003e\n Differential Electronic Module (DEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 110683-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eOriginal Used OEM Volvo AWD Module\u003c\/strong\u003e\n Bench-tested used Haldex control unit for Volvo AWD applications. Prepared as a reliable replacement for failed Gen 4 DEM modules causing AWD malfunction, communication faults or Anti-Skid warnings.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e5WP33517-02  •  5WP3351702  •  HAP542  •  110683-01  •  11068301\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Interchangeable References:\u003c\/strong\u003e\n \u003cp\u003e5WP33517-01  •  5WP33517-02  •  5WP33517-03  •  5WP33517\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ VM References:\u003c\/strong\u003e\n \u003cp\u003eContinental  •  HAP542  •  110683-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, check the number printed on your existing DEM \/ Haldex module and confirm it matches one of the references listed above. Some interchangeable units may require coding or reprogramming after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Electronic Module (DEM) \/ Haldex Control Unit\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 110683-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOEM Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e5WP33517-02 \/ 5WP3351702\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSelected Volvo AWD vehicles with 4th generation Haldex system\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed \/ Bench-Tested \/ Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eProgramming Note:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCoding or reprogramming may be required on some vehicles after installation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis used original Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33517-02\u003c\/strong\u003e is a Continental Differential Electronic Module (DEM) for Volvo AWD vehicles using a 4th generation Haldex system. It manages rear axle engagement, communicates with the AWD system electronics and helps restore proper traction when the original module has failed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls AWD engagement through the rear differential Haldex system\u003c\/li\u003e\n \u003cli\u003eHelps restore traction when the original DEM has stopped communicating\u003c\/li\u003e\n \u003cli\u003eSupports stable operation of the Volvo AWD drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eCan help eliminate common DEM-related Anti-Skid and AWD fault symptoms\u003c\/li\u003e\n \u003cli\u003eProvides a cost-effective OEM replacement for selected Volvo models\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eTypical failure causes include internal electronic malfunction and moisture or water ingress into the module housing. Replacing a faulty DEM can restore normal AWD function when the existing unit no longer operates correctly.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eService Recommendation\u003c\/strong\u003e\n When replacing the module, it is recommended to inspect the Haldex system for moisture, wiring issues and fluid condition. Professional diagnostics should be carried out after installation, especially if the original unit logged communication faults.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis used Volvo Haldex DEM is suitable for selected Volvo AWD models equipped with 4th generation Haldex system. Always verify the exact part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolvo V70 AWD (2009–2012)\u003c\/li\u003e\n \u003cli\u003eVolvo S60 AWD (2009–2012)\u003c\/li\u003e\n \u003cli\u003eVolvo S80 AWD (2009–2012)\u003c\/li\u003e\n \u003cli\u003eVolvo XC60 AWD (2009–2012)\u003c\/li\u003e\n \u003cli\u003eVolvo XC70 AWD (2009–2012)\u003c\/li\u003e\n \u003cli\u003eVolvo XC90 AWD (2009–2013)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this DEM fits your vehicle, send the VIN number or the printed number from your existing module and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Faults \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eA faulty Volvo Haldex DEM can commonly trigger one or more of the following symptoms:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – The AWD \/ DEM module is not responding to diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eAnti-Skid Service\u003c\/code\u003e – Warning message shown on the dashboard\u003c\/li\u003e\n \u003cli\u003eAggressive wheel spin or poor rear axle engagement\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 system not working correctly\u003c\/li\u003e\n \u003cli\u003eStored drivetrain or traction related warning messages\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eKnown Failure Cause\u003c\/strong\u003e\n Moisture or water ingress is a common reason for internal DEM failure on these Volvo Haldex modules, so the connector area and housing condition should always be checked during replacement.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact part number on the original Volvo DEM before replacement\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement DEM and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored faults and confirm module communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or reprogramming if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a road test and confirm correct AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended During Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInspect the module area for water ingress and damaged seals\u003c\/li\u003e\n \u003cli\u003eCheck Haldex fluid condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eInspect pump, wiring and connector pins for damage or corrosion\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module needs coding after installation, our team can help. Contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit is supplied with a 12-month functionality warranty and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eBench-tested module functionality before shipping\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eOnline support if coding assistance is needed after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Excludes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by moisture ingress, wiring faults or improper installation\u003c\/li\u003e\n \u003cli\u003eVehicle-side pump, drivetrain or electrical faults unrelated to the module itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you are unsure about compatibility, coding or installation, contact our technical team before ordering. We will help you verify the correct part number for your Volvo.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact module number printed on your original DEM before ordering.\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available. If your country is not shown at checkout, contact us directly.\u003c\/li\u003e\n \u003cli\u003eSome interchangeable units may require coding or reprogramming after installation.\u003c\/li\u003e\n \u003cli\u003eChecking Haldex fluid condition and moisture around the module area is recommended during replacement.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":48637953081677,"sku":"","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0ay907554d-refurbished","title":"0AY907554D Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554D Haldex control unit for Gen 4 AWD. OEM Continental module for Audi, VW, Skoda and SEAT with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554D, 0AY598554D, Haldex control unit, HAP542, 5WP33522-03, SW 0042, HW H43, Gen 4 Haldex, Continental, Tiguan, Sharan, Q3, A3, TT, Octavia, Yeti, Superb, Alhambra, Leon\"\u003e\n \u003ctitle\u003e0AY907554D Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554D\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-03\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0042 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, fully bench tested and resealed to restore durability and stable operation. The unit is prepared as a reliable OEM replacement for a faulty original Haldex controller and offers a cost-effective way to restore proper AWD function.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554D  •  0AY598554D  •  HAP542  •  5WP33522-03  •  SW 0042  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY598554  •  0AY598554A  •  0AY598554B  •  0AY598554C  •  0AY598554D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-03\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0042\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554D\u003c\/strong\u003e. It is a critical component of the fourth-generation Haldex all-wheel-drive system, responsible for controlling the rear differential clutch and enabling correct torque transfer to the rear axle when traction is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the rear differential clutch engagement in the AWD system\u003c\/li\u003e\n \u003cli\u003eSupports proper torque transfer to the rear axle during traction demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the AWD system and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for intermittent or complete AWD loss\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0AY907554D is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Yeti\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Beetle\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Jetta\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat CC\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3\u003c\/li\u003e\n \u003cli\u003eAudi S3\u003c\/li\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003cli\u003eSEAT Altea XL\u003c\/li\u003e\n \u003cli\u003eSEAT Leon\u003c\/li\u003e\n \u003cli\u003eSEAT Toledo\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373 and related system components. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"167f78707956757764653b7375633875797b\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#c5acaba3aa85a6a4b7b6e8a0a6b0eba6aaa8\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":48731163754829,"sku":"1","price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_6f237bf8-5b60-4def-98ad-049e0f03750d.jpg?v=1741337565"},{"product_id":"haldex-control-unit-for-land-rover-5wp33501-06","title":"5WP33501-06 Haldex control unit Land Rover Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 5WP33501-06 Haldex control unit for Land Rover AWD. Original Siemens ECU for 3rd generation Haldex, fully tested with 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33501-06, 5WP3350106, 5WP33501, Haldex control unit, Land Rover AWD, 3rd generation Haldex, Siemens, HAP542, Freelander 2, Range Rover Evoque, AWD ECU, rear differential module\"\u003e\n \u003ctitle\u003e5WP33501-06 Haldex Control Unit Land Rover AWD | Refurbished Siemens OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished OEM Haldex Control Unit 5WP33501-06 – Land Rover AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33501-06\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential control module for Land Rover AWD vehicles with 3rd generation Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 3rd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33501\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eRework Details\u003c\/strong\u003e\n New cover and silicone sealing for improved durability\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eRefurbished \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished original Haldex control unit, bench-tested and resealed before dispatch to restore reliable AWD operation and rear differential control.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP33501-06  •  5WP3350106  •  5WP33501  •  HAP542\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP33501-01  •  5WP33501-02  •  5WP33501-03  •  5WP33501-04  •  5WP33501-05  •  5WP33501\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eSiemens  •  HAP542  •  Rear Differential AWD Control Unit\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number on your current Haldex control unit with the references listed above. If you are unsure, contact us and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 3rd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (AWD ECU \/ Haldex Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33501\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eLand Rover AWD vehicles with 3rd generation Haldex coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRefurbishment:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eResealed with new silicone and fitted with a replacement cover\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOnline support in case the module needs coding or fitment assistance\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33501-06\u003c\/strong\u003e, designed for Land Rover AWD systems using the 3rd generation Haldex coupling. The module manages rear differential engagement and helps restore proper four-wheel-drive operation when the original ECU has failed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling to engage rear-wheel drive when required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and other drivetrain systems\u003c\/li\u003e\n \u003cli\u003eMonitors AWD operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eManages hydraulic clutch engagement strategy in the rear coupling\u003c\/li\u003e\n \u003cli\u003eHelps restore rear differential control when the original ECU is faulty\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDurability Upgrade\u003c\/strong\u003e\n This refurbished unit is supplied with a new cover and fresh silicone sealing to improve durability and give performance close to a like-new module.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eTypical Land Rover applications for this Haldex control unit include the vehicles below. Always confirm the part number on your current module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eLand Rover\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLand Rover Freelander 2 AWD – up to 2009\u003c\/li\u003e\n \u003cli\u003eEarly Range Rover Evoque AWD models\u003c\/li\u003e\n \u003cli\u003eSelected Land Rover AWD applications using 5WP33501-series Haldex ECU\u003c\/li\u003e\n \u003cli\u003eVehicles fitted with compatible ECU numbers 5WP33501-01 to 5WP33501-05\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing part label and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Faults \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can cause the AWD system to stop working or operate intermittently. Common symptoms and diagnostic issues include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve fault \/ hydraulic pressure issue\u003c\/li\u003e\n \u003cli\u003eLoss of 4x4 \/ AWD function\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eClutch or hydraulic-related faults affecting rear axle engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex control valve N373 if related faults are present\u003c\/li\u003e\n \u003cli\u003eCheck Haldex oil condition and service the system if needed\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eVerify that no remaining AWD, ABS or ESP faults are stored after fitting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If you need help with diagnostics, compatibility or coding, reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"4e272028210e2d2f3c3d632b2d3b602d2123\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater ingress or corrosion inside the module or connector can interrupt communication and damage internal electronics.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Hydraulic System Faults\u003c\/h3\u003e\n \u003cp\u003eFaults in the Haldex control valve or hydraulic system can overload the ECU and trigger repeated drivetrain warnings.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and thermal stress can damage internal circuits, leading to intermittent AWD operation or total loss of rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, weak power supply or poor connector contact can create no-communication errors and unstable module behaviour.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and diagnostics support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eDiagnostic checks are recommended after installation\u003c\/li\u003e\n \u003cli\u003eThis module should only be fitted where the original OEM number matches\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":48732735177037,"sku":"","price":319.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_5a93c703-8647-446f-8124-eefc18d537aa.jpg?v=1741337501"},{"product_id":"haldex-control-unit-0ay907554e","title":"0AY907554E Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0AY907554E Haldex control unit for VAG AWD vehicles. Continental Gen 4 rear differential module, SW 0043 \/ HW H43, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554E, Haldex control unit, used Haldex ECU, Continental, HAP542, 5WP33522-04, SW 0043, HW H43, Tiguan, Sharan, Alhambra, Audi Q3, Octavia 4x4, Superb, Haldex Gen 4\"\u003e\n \u003ctitle\u003e0AY907554E Haldex Control Unit Gen 4 | Used Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0AY907554E – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554E\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental Haldex rear differential control unit for selected VAG vehicles with 4th generation AWD system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 0043 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eOriginal Used OEM Module\u003c\/strong\u003e\n Fully tested Continental Haldex control unit supplied with the original cover and plug connector. Prepared as a reliable replacement for failed Gen 4 AWD modules in compatible VAG vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e0AY907554E  •  HAP542  •  5WP33522-04  •  SW 0043  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY907554E\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, check the number printed on your original Haldex ECU and confirm it matches the references listed above. If you are unsure, contact us before purchase for fitment verification.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-04\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 0043\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVW, Audi, Škoda and SEAT vehicles with 4th generation Haldex AWD\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed \/ Tested \/ Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis used original Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554E\u003c\/strong\u003e is designed for 4th generation Haldex AWD systems used in selected Volkswagen Group vehicles. It is a Continental rear differential controller responsible for managing AWD engagement, communication with drivetrain electronics and stable operation of the Haldex system.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear differential clutch engagement in Gen 4 Haldex systems\u003c\/li\u003e\n \u003cli\u003eHelps restore 4x4 \/ AWD operation when the original module has failed\u003c\/li\u003e\n \u003cli\u003eSupports communication with ABS, ESP and AWD electronics\u003c\/li\u003e\n \u003cli\u003eCan help resolve no-communication faults and traction-related warnings\u003c\/li\u003e\n \u003cli\u003eOffers a cost-effective replacement for a damaged original ECU\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eThe unit is suitable for vehicles showing AWD malfunction, rear-wheel drive not engaging, no communication with the Haldex module, or warning lights related to ESP \/ ABS. This product is supplied as a used OEM part that has been checked for correct operation before dispatch.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eIncluded With The Unit\u003c\/strong\u003e\n This used module includes the plug connector and original cover. Online support is available if coding or post-installation assistance is required.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex ECU is suitable for selected VAG vehicles equipped with a 4th generation Haldex AWD system. Always verify the exact part number on your original unit before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3 8P Quattro\u003c\/li\u003e\n \u003cli\u003eAudi S3 8P Quattro\u003c\/li\u003e\n \u003cli\u003eAudi TT 8J Quattro\u003c\/li\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia II 4x4\u003c\/li\u003e\n \u003cli\u003eŠkoda Yeti\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are not sure whether this module fits your car, send the VIN number or the printed number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with a defective Haldex ECU can commonly trigger the following symptoms or fault indications:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control module fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex clutch pump related fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex control valve \/ N373 related issue\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – Module not responding to diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights linked to AWD malfunction\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 system not working correctly\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM number on the original control unit before replacement\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old ECU and inspect the connector area for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm proper AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended During Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex valve N373 if there are valve-related faults\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil during service\u003c\/li\u003e\n \u003cli\u003eInspect wiring, pump condition and connector pins for damage or corrosion\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module needs coding after installation, our team can help. Contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"0e676068614e6d6f7c7d236b6d7b206d6163\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit is supplied with a 12-month functionality warranty and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified working module functionality before shipping\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eOnline support if coding assistance is needed after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Excludes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, moisture ingress or poor installation\u003c\/li\u003e\n \u003cli\u003eVehicle-side pump, valve or electrical faults unrelated to the ECU itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you are unsure about compatibility, coding or installation, contact our technical team before ordering. We will help you verify the correct part number for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact module number printed on your original unit before ordering.\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available. If your country is not shown at checkout, contact us directly.\u003c\/li\u003e\n \u003cli\u003eReplacing the Haldex valve N373 and servicing the Haldex oil is recommended when fitting a replacement ECU.\u003c\/li\u003e\n \u003cli\u003eOnline support is available if coding assistance is required after installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":49837354910029,"sku":"2","price":279.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"new-haldex-control-unit-0bs907554d","title":"0BS907554D Haldex control unit New","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"0BS907554D Haldex Control Unit Gen 4 AWD – new Continental OEM for VW, Audi, Škoda and SEAT vehicles with 4th generation Haldex. Fully functional, 24-month warranty, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BS907554D, 0BS598554D, HAP542, 5WP33527-01, 5WP33524-01, 5WP33524-02, 5WP33524-03, Haldex control unit, Gen 4 Haldex, Continental Haldex ECU, AWD control module, Passat Q3 Tiguan Superb Octavia Haldex\"\u003e\n \u003ctitle\u003e0BS907554D Haldex Control Unit Gen 4 AWD | New OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; 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padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eNew Haldex Control Unit 0BS907554D – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BS907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental rear differential control module for VAG 4th generation Haldex AWD vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n New Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33527-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 4017 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 24 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n New functional Haldex controller prepared to restore rear differential control, AWD engagement and stable communication with drivetrain electronics in compatible Gen 4 systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554D  •  0BS598554D  •  HAP542  •  5WP33527-01  •  SW 4017  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554  •  0BS907554A  •  0BS907554B  •  0BS907554C  •  0BS907554D  •  0BS598554  •  0BS598554A  •  0BS598554B  •  0BS598554C  •  0BS598554D  •  5WP33527  •  5WP33524-01  •  5WP33524-02  •  5WP33524-03\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33527-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 4017\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 4th generation Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eNew \/ Fully Functional\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a new functional Continental Haldex control unit with OEM number \u003cstrong style=\"color:#E3FC02;\"\u003e0BS907554D\u003c\/strong\u003e, designed for 4th generation Haldex AWD systems used across Volkswagen Group vehicles. The module manages rear axle engagement, controls clutch pressure through the hydraulic system and communicates with ABS, ESP and engine management electronics.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors speed difference between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls hydraulic pump pressure for rear clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e for clutch pressure regulation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 14px;\"\u003eTypical failures of the original controller can cause AWD disengagement, communication errors, N373 valve faults, pump faults or ESP \/ ABS warning lights. This new replacement unit is intended to restore stable AWD operation in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n Coding support is available if required after installation. If you need guidance with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eTypical applications for this Gen 4 Haldex control unit include the following vehicles. Always confirm the part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003ePassat B6 \/ B7 4Motion (2008–2014)\u003c\/li\u003e\n \u003cli\u003ePassat CC (2008–2017)\u003c\/li\u003e\n \u003cli\u003eCaddy III (2010–2015)\u003c\/li\u003e\n \u003cli\u003eTiguan\u003c\/li\u003e\n \u003cli\u003eSharan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eQ3 (2011–2014)\u003c\/li\u003e\n \u003cli\u003eRS Q3 (pre-Apr 2013 \/ Jan 2015 as listed by source)\u003c\/li\u003e\n \u003cli\u003eTT (2008–2012)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia\u003c\/li\u003e\n \u003cli\u003eSuperb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit can trigger fault codes, communication problems and complete loss of rear-wheel engagement. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM \/ Internal Controller Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal Control Module Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve problem\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 system malfunction or rear-wheel drive not engaging\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex control unit on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the old module\u003c\/li\u003e\n \u003cli\u003eInstall the replacement unit and secure all mounting points properly\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eClear fault codes and carry out coding or adaptation if required\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm proper AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eInspect the rear wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck Haldex oil condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eInspect the clutch pump before final installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"dab3b4bcb59ab9bba8a9f7bfb9aff4b9b5b7\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or clutch pump can overload the AWD system and trigger recurring module-related diagnostic errors, engagement issues or loss of rear-wheel drive.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e24-Month Warranty:\u003c\/strong\u003e This new Haldex control unit is supplied with a 24-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve, pump or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":49837358448973,"sku":"","price":499.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/169C9D19-3C9A-461E-A7A1-36312923A27D.jpg?v=1721201953"},{"product_id":"haldex-control-unit-0ay907554e-remanufactured","title":"0AY907554E Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554E Haldex control unit for Gen 4 AWD. OEM Continental module for Audi, VW, Skoda and SEAT with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554E, 0AY598554E, Haldex control unit, HAP542, 5WP33522-04, SW 0043, HW H43, Gen 4 Haldex, Continental, Tiguan, Sharan, Q3, A3, TT, Octavia, Yeti, Superb, Alhambra, Leon\"\u003e\n \u003ctitle\u003e0AY907554E Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554E\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554E\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0043 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, fully bench tested and resealed with fresh silicone and a new cover to restore durability similar to a new module. The unit is prepared as a reliable OEM replacement for a faulty original Haldex controller and includes mounting bolts.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554E  •  0AY598554E  •  HAP542  •  5WP33522-04  •  SW 0043  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY907554E  •  0AY598554  •  0AY598554A  •  0AY598554B  •  0AY598554C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-04\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0043\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554E\u003c\/strong\u003e. It is a critical component of the fourth-generation Haldex all-wheel-drive system, responsible for controlling the rear differential clutch and enabling correct torque transfer to the rear axle when traction is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the rear differential clutch engagement in the AWD system\u003c\/li\u003e\n \u003cli\u003eSupports proper torque transfer to the rear axle during traction demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the AWD system and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for intermittent or complete AWD loss\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0AY907554E is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Yeti\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Beetle\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Jetta\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat CC\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3\u003c\/li\u003e\n \u003cli\u003eAudi S3\u003c\/li\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003cli\u003eSEAT Altea XL\u003c\/li\u003e\n \u003cli\u003eSEAT Leon\u003c\/li\u003e\n \u003cli\u003eSEAT Toledo\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373, the Haldex pump and replace the Haldex oil. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eReplace the Haldex oil during service\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"c6afa8a0a986a5a7b4b5eba3a5b3e8a5a9ab\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#89e0e7efe6c9eae8fbfaa4eceafca7eae6e4\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50073159565645,"sku":"","price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_5723b0e9-2200-4d01-aa8f-d9ac9e1b9652.jpg?v=1741337489"},{"product_id":"refurbished-haldex-ecu-valve-set-0ay907554e","title":"0AY907554E Haldex control unit refurbished and valve N373","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554E Haldex control unit with refurbished N373 valve for VAG AWD vehicles. Continental Gen 4 set, SW 0043 \/ HW H43, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554E, Haldex control unit, N373 valve, refurbished, Continental, HAP542, 5WP33522-04, SW 0043, HW H43, 0AY598554C, 0BR598554C, 0BS598554C, Audi Q3, Tiguan, Sharan, Octavia, Superb, Alhambra\"\u003e\n \u003ctitle\u003e0AY907554E Haldex Control Unit + N373 Valve | Refurbished Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554E with N373 Valve\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554E\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eRefurbished Continental Gen 4 Haldex control unit set for VAG AWD vehicles, supplied with a refurbished N373 valve.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eIncluded in Set\u003c\/strong\u003e\n Control Unit + Refurbished N373 Valve\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 0043 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eRefurbished \u0026amp; Verified Working Set\u003c\/strong\u003e\n This complete set includes a refurbished OEM Haldex control unit and a refurbished N373 valve, professionally restored, tested and prepared to restore reliable AWD performance in compatible Gen 4 VAG applications.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e0AY907554E  •  HAP542  •  5WP33522-04  •  SW 0043  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY907554E\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSolenoid OEM Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY598554C  •  0BR598554C  •  0BS598554C  •  109593\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your current Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us for verification.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit + N373 Valve\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-04\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 0043\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVW, Audi, Škoda and SEAT vehicles with 4th generation Haldex AWD\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis complete set includes a refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554E\u003c\/strong\u003e and a refurbished N373 valve for 4th generation Haldex AWD systems used in Volkswagen Group vehicles. Both components have been professionally restored and tested to support reliable rear differential engagement and stable AWD communication.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Set Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eRestores rear-wheel-drive engagement in Gen 4 Haldex systems\u003c\/li\u003e\n \u003cli\u003eHelps resolve repeated N373 valve-related faults\u003c\/li\u003e\n \u003cli\u003eSupports correct communication with ABS \/ ESP and AWD electronics\u003c\/li\u003e\n \u003cli\u003eProvides a more complete repair solution than replacing the ECU alone\u003c\/li\u003e\n \u003cli\u003eHelps reduce repeat issues caused by a worn or faulty control valve\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eThis set is intended for vehicles showing no communication faults, N373 valve errors, ESP \/ ABS warning lights or loss of rear-wheel-drive function. Replacing both the ECU and valve together can improve repair reliability when both components may be affected.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need advice with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis refurbished Haldex ECU and valve set is suitable for selected VAG vehicles using a 4th generation Haldex AWD system. Always verify the exact part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this set fits your vehicle, send the VIN number or part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit or N373 valve commonly trigger the following symptoms or diagnostic issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve problem\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights caused by AWD control failure\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 system malfunction\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If the vehicle repeatedly logs valve-related faults, replacing the control unit and N373 valve together can be a better solution than replacing only one component.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old ECU and inspect the connector area for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eReplace the N373 valve during the same service procedure\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm AWD module communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended at Time of Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck Haldex oil condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eInspect the rear wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eClear all stored AWD, ABS and ESP related faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"acc5c2cac3eccfcddedf81c9cfd982cfc3c1\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or by using the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit and valve set is supplied with a 12-month warranty and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified functionality of the refurbished control unit and valve set\u003c\/li\u003e\n \u003cli\u003eBench-tested operation before shipping\u003c\/li\u003e\n \u003cli\u003eBasic pre-purchase compatibility guidance\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Does Not Cover\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without part-number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by installation errors or external vehicle faults\u003c\/li\u003e\n \u003cli\u003eRelated pump, wiring or drivetrain defects outside the supplied set\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact part number before ordering\u003c\/li\u003e\n \u003cli\u003eShipping worldwide is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not available at checkout, contact us directly for manual processing\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50261686911309,"sku":null,"price":429.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/photo_2024-10-02_08-34-01.jpg?v=1727850874"},{"product_id":"new-haldex-control-unit-0ay907554e","title":"0AY907554E Haldex control unit New","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"New 0AY907554E Haldex control unit for Gen 4 AWD. Original Continental module for Audi, VW, Skoda and SEAT with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554E, Haldex control unit, HAP542, 5WP33522-04, SW 0043, HW H43, Gen 4 Haldex, Continental, Tiguan, Passat, Sharan, Q3, A3, TT, Octavia, Superb, Alhambra\"\u003e\n \u003ctitle\u003e0AY907554E Haldex Control Unit Gen 4 | New OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eNew Haldex Control Unit 0AY907554E\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554E\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n New Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0043 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 24 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n This 100% brand-new original Haldex control unit is fully tested and prepared as a reliable OEM replacement for a faulty original Haldex controller. It is supplied with functionality warranty and online support in case the module needs coding after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554E  •  HAP542  •  5WP33522-04  •  SW 0043  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-04\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0043\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eNew Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine new OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554E\u003c\/strong\u003e. It is a critical component of the fourth-generation Haldex all-wheel-drive system, responsible for controlling the rear differential clutch and enabling correct torque transfer to the rear axle when traction is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the rear differential clutch engagement in the AWD system\u003c\/li\u003e\n \u003cli\u003eSupports proper torque transfer to the rear axle during traction demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the AWD system and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for intermittent or complete AWD loss\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0AY907554E is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3\u003c\/li\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373 and related system components. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"d4bdbab2bb94b7b5a6a7f9b1b7a1fab7bbb9\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e24-Month Warranty:\u003c\/strong\u003e This new Haldex control unit has been tested for correct operation and is supplied with a 24-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#e58c8b838aa586849796c8808690cb868a88\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace the Haldex control valve N373 when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50267702919501,"sku":"1","price":499.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/169C9D19-3C9A-461E-A7A1-36312923A27D.jpg?v=1721201953"},{"product_id":"haldex-control-unit-0ay907554c-refurbished","title":"0AY907554C Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554C Haldex control unit for Gen 4 AWD. OEM Continental module for Audi, VW, Skoda and SEAT with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554C, Haldex control unit, HAP542, 5WP33522-01, SW 0041, HW H41, Gen 4 Haldex, Continental, Tiguan, Sharan, Q3, TT, Octavia, Superb, Alhambra\"\u003e\n \u003ctitle\u003e0AY907554C Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554C\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0041 \/ HW H41\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, fully bench tested and resealed with new silicone to restore durability similar to a new module. The unit is prepared as a reliable OEM replacement for a faulty original Haldex controller.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554C  •  HAP542  •  5WP33522-01  •  SW 0041  •  HW H41\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0041\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH41\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554C\u003c\/strong\u003e. It is a critical component of the fourth-generation Haldex all-wheel-drive system, responsible for controlling the rear differential clutch and enabling correct torque transfer to the rear axle when traction is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the rear differential clutch engagement in the AWD system\u003c\/li\u003e\n \u003cli\u003eSupports proper torque transfer to the rear axle during traction demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the AWD system and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for intermittent or complete AWD loss\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0AY907554C is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373 and related system components. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"046d6a626b4467657677296167712a676b69\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#5930373f36193a382b2a743c3a2c773a3634\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50335985369421,"sku":null,"price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_05112cd3-7675-4b9b-ad01-4a067a9ff657.jpg?v=1741337351"},{"product_id":"haldex-control-unit-1k0907554l-refurbished","title":"1K0907554L Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 1K0907554L Haldex control unit for VAG AWD vehicles. Siemens Gen 2 rear differential module, SW 0116 \/ HW H06, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554L, 1K0907554F, 1K0907554C, 1K0907554B, 1K0907554A, 1K0525130L, Haldex control unit, VAG AWD, Volkswagen Tiguan, Audi, Skoda, Seat, Siemens, HAP511nm, 5WP22241-01, SW 0116, HW H06, Gen 2 Haldex\"\u003e\n \u003ctitle\u003e1K0907554L Haldex Control Unit Gen 2 | Refurbished Siemens OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished OEM Haldex Control Unit 1K0907554L – VAG AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554L\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential control module for Volkswagen Group vehicles with 2nd generation Haldex AWD.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511nm \/ 5WP22241-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 0116 \/ HW H06\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eRefurbished \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished, sealed with new silicone and fully tested replacement Haldex controller for Gen 2 AWD systems. Designed to restore rear differential engagement and reliable communication with the AWD system in compatible VAG vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554L  •  1K0525130L  •  5WP22241-01  •  109429-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Interchangeable ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554  •  1K0907554A  •  1K0907554B  •  1K0907554C  •  1K0907554F  •  1K0907554L\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eRelated Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP511nm  •  5WP22241-01  •  SW 0116  •  HW H06\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the printed part number on your current Haldex controller. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511nm \/ 5WP22241-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 0116\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H06\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with 2nd generation Haldex coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e1K0907554L\u003c\/strong\u003e, developed for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module manages rear axle engagement by controlling the hydraulic operation of the Haldex clutch and communicating with ABS \/ ESP and drivetrain systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the vehicle’s ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pre-charge pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD function in normal driving and low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eA faulty Gen 2 Haldex ECU can cause total loss of rear drive, intermittent AWD operation, CAN communication errors, or ESP \/ ABS warning lights. This refurbished version is resealed with new silicone for durability comparable to a new module and is tested before dispatch.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need advice with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eCommon applications for this 2nd generation Haldex control unit include the following VAG AWD vehicles. Always confirm the part number on your old module before purchase:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Tiguan AWD\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat AWD\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf 4Motion \/ Golf V 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3 \/ S3 Quattro\u003c\/li\u003e\n \u003cli\u003eAudi TT Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSkoda Superb AWD\u003c\/li\u003e\n \u003cli\u003eSkoda Octavia II 4x4\u003c\/li\u003e\n \u003cli\u003eSkoda Fabia AWD applications with matching controller\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSeat Altea 4x4\u003c\/li\u003e\n \u003cli\u003eSelected VAG vehicles using matching 1K0907554-series or 1K0525130L Haldex ECU\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or the part number from your existing Haldex ECU and we will help verify the correct controller before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can trigger communication faults, pump or valve faults, and dashboard warning lights. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump (V181): Faulty \/ Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Valve for Controlling Clutch Operating Angle (N373): Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Control Module Defective \/ Internal Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal control module memory error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eRear differential disengagement or AWD not working correctly\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect the connector pins and housing for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003eCheck the pump and connector condition before final installation\u003c\/li\u003e\n \u003cli\u003eInspect the pre-charge pump and wiring\u003c\/li\u003e\n \u003cli\u003eCheck for stored ABS \/ AWD communication faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater or condensation inside the module housing can damage the electronics and interrupt communication with the AWD system.\u003c\/p\u003e\n\n \u003ch3\u003e2. Pump or Valve Faults\u003c\/h3\u003e\n \u003cp\u003eFailures in the Haldex clutch pump or N373 valve can overload the ECU and trigger repeated drivetrain faults or rear axle disengagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and temperature cycling can lead to internal circuit failure, memory errors and unstable AWD operation.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Problems\u003c\/h3\u003e\n \u003cp\u003eCorroded plugs, damaged wiring or weak power supply can create no-communication errors and unreliable AWD function.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit is supplied with a 12-month warranty for the product itself and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified functionality of the controller hardware\u003c\/li\u003e\n \u003cli\u003eBench-tested operation before shipping\u003c\/li\u003e\n \u003cli\u003eBasic pre-purchase compatibility guidance\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Does Not Cover\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without part-number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, moisture ingress or improper installation\u003c\/li\u003e\n \u003cli\u003eExternal pump, valve or vehicle-side electrical faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics, or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this module fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact us directly\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking the N373 valve is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50399390007629,"sku":"","price":389.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_bf84bdec-a49e-464b-8ffb-faf24c63f52c.jpg?v=1741337331"},{"product_id":"haldex-control-unit-1k0907554l","title":"1K0907554L Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 1K0907554L Haldex control unit for VAG AWD vehicles. Siemens Gen 2 rear differential module, fully tested with warranty and online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554L, 1K0907554F, 1K0907554C, 1K0907554B, 1K0907554A, 1K0525130L, Haldex control unit, VAG AWD, Volkswagen Tiguan, Audi, Skoda, Seat, Siemens, HAP511nm, 5WP22241-01, SW 0116, HW H06, Gen 2 Haldex\"\u003e\n \u003ctitle\u003e1K0907554L Haldex Control Unit Gen 2 | Used Siemens OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed OEM Haldex Control Unit 1K0907554L – VAG AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554L\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential control module for Volkswagen Group AWD vehicles with 2nd generation Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511nm \/ 5WP22241-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 0116 \/ HW H06\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eUsed \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Reliable used OEM Haldex control unit for VAG Gen 2 AWD systems, bench-tested and confirmed functional. Designed to restore rear differential engagement, AWD communication and stable traction support.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554L  •  1K0525130L  •  5WP22241-01  •  109429-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Interchangeable ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554  •  1K0907554A  •  1K0907554B  •  1K0907554C  •  1K0907554F  •  1K0907554L\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eRelated Module References:\u003c\/strong\u003e\n \u003cp\u003e5WP22222-01 \/ -02 \/ -03  •  5WP22232-01 \/ -02 \/ -03 \/ -04  •  104572-05 \/ -04 \/ -02  •  107718-02\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the printed part number on your current Haldex controller. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511nm \/ 5WP22241-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 0116\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H06\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with 2nd generation Haldex coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a used OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e1K0907554L\u003c\/strong\u003e, intended for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module controls rear differential engagement, supports torque transfer to the rear axle and communicates with the vehicle’s drivetrain and stability systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement when traction is needed\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD \/ 4x4 operation in VAG applications\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and related drivetrain systems\u003c\/li\u003e\n \u003cli\u003eStores and reports diagnostic trouble codes when faults occur\u003c\/li\u003e\n \u003cli\u003eSupports stable rear axle engagement in low-grip conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eUsed OEM Replacement\u003c\/strong\u003e\n This unit is bench-tested and confirmed functional. Online support is included in case the module needs coding or setup assistance after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex controller is intended for VAG AWD vehicles using the matching Gen 2 rear differential control unit. Always verify the exact number on your original module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen Group\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Tiguan AWD\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat AWD\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf 4Motion \/ Golf V 4Motion\u003c\/li\u003e\n \u003cli\u003eAudi A3 \/ S3 Quattro\u003c\/li\u003e\n \u003cli\u003eAudi TT Quattro\u003c\/li\u003e\n \u003cli\u003eSkoda Superb AWD\u003c\/li\u003e\n \u003cli\u003eSkoda Octavia II 4x4\u003c\/li\u003e\n \u003cli\u003eSkoda Fabia AWD applications with matching controller\u003c\/li\u003e\n \u003cli\u003eSeat Altea 4x4\u003c\/li\u003e\n \u003cli\u003eSelected VAG vehicles using matching 1K0907554-series or 1K0525130L Haldex ECU\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or the part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can trigger communication faults, pump or valve faults, and dashboard warning lights. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex clutch pump (V181) sporadic fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch control valve (N373) sporadic fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal control module memory error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eRear differential disengagement or AWD not working correctly\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect the connector pins and housing for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex control valve N373 when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the Haldex clutch pump if related faults are stored\u003c\/li\u003e\n \u003cli\u003eCheck the wiring, connectors and surrounding module area\u003c\/li\u003e\n \u003cli\u003eVerify AWD operation after installation and road test\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module needs coding assistance or you need help with compatibility, reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"1b72757d745b787a6968367e786e35787476\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater or condensation inside the module housing can damage the electronics and interrupt communication with the AWD system.\u003c\/p\u003e\n\n \u003ch3\u003e2. Pump or Valve Faults\u003c\/h3\u003e\n \u003cp\u003eFailures in the Haldex clutch pump or N373 valve can overload the ECU and trigger repeated drivetrain faults or rear axle disengagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and temperature cycling can lead to internal circuit failure, memory errors and unstable AWD operation.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Problems\u003c\/h3\u003e\n \u003cp\u003eCorroded plugs, damaged wiring or weak power supply can create no-communication errors and unreliable AWD function.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty \u0026amp; Support\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003eWarranty of Functionality:\u003c\/strong\u003e This used Haldex control unit is supplied with functionality warranty and online support in case the module needs coding or installation guidance.\u003c\/p\u003e\n\n \u003ch3\u003eSupport Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCompatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eBasic installation and coding advice\u003c\/li\u003e\n \u003cli\u003eHelp with identifying common diagnostic issues\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and diagnostics support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this module fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact directly for manual processing\u003c\/li\u003e\n \u003cli\u003eReplacing the Haldex valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module needs coding assistance\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50399410356557,"sku":"","price":359.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0br907554c-refurbished","title":"0BR907554C Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished OEM 0BR907554C Haldex control unit for Gen 4 AWD. Original Continental module for Audi, VW, Skoda and SEAT vehicles with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BR907554C, 0BR598554C, Haldex control unit, HAP542, 5WP33523-04, SW 3018, HW H43, 115928-01, Gen 4 Haldex, Continental, Golf, A3, S3, TT, Octavia, Yeti, Superb, Altea XL, Leon, Toledo\"\u003e\n \u003ctitle\u003e0BR907554C Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0BR907554C\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BR907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33523-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 3018 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, bench tested and resealed with new silicone to provide durability close to a new unit while restoring proper rear-drive engagement and stable AWD system communication.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554C  •  0BR598554C  •  HAP542  •  5WP33523-04  •  115928-01  •  SW 3018  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554  •  0BR907554A  •  0BR907554B  •  0BR907554C  •  0BR598554  •  0BR598554A  •  0BR598554B  •  0BR598554C  •  5WP33523-01  •  5WP33523-02  •  5WP33523-03  •  114479-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33523-04\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eAdditional Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e115928-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e3018\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BR907554C\u003c\/strong\u003e. It is a key electronic component of the fourth-generation Haldex all-wheel-drive system and is responsible for managing the rear differential coupling and restoring AWD operation when the original module has failed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear differential clutch engagement in the Gen 4 Haldex system\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eSupports stable rear axle engagement in changing traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0BR907554C is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Yeti\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Beetle\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Jetta\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3\u003c\/li\u003e\n \u003cli\u003eAudi S3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Altea XL\u003c\/li\u003e\n \u003cli\u003eSEAT Leon\u003c\/li\u003e\n \u003cli\u003eSEAT Toledo\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373 and related system components. A proper VAG-compatible diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM part number on the original control unit\u003c\/li\u003e\n \u003cli\u003eDisconnect the module and inspect the connector pins and wiring\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module in the original position\u003c\/li\u003e\n \u003cli\u003eCheck the condition of the Haldex pump and N373 valve\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"c1a8afa7ae81a2a0b3b2eca4a2b4efa2aeac\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#0e676068614e6d6f7c7d236b6d7b206d6163\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50433624441165,"sku":"","price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_5d5f3b52-1781-4cb8-8a02-c21b89a3c5a2.jpg?v=1741337307"},{"product_id":"haldex-control-unit-0br907554c","title":"0BR907554C Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"0BR907554C Haldex Control Unit Gen 4 AWD – used Continental OEM for VW, Audi, Škoda and SEAT vehicles with 4th generation Haldex. Fully tested, 12-month warranty, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BR907554C, 0BR598554C, HAP542, 5WP33523-04, Haldex control unit, Gen 4 Haldex, Continental Haldex ECU, AWD control module, A3 S3 TT Golf Yeti Superb Octavia Haldex\"\u003e\n \u003ctitle\u003e0BR907554C Haldex Control Unit Gen 4 AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0BR907554C – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BR907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental rear differential control module for VAG 4th generation Haldex AWD vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33523-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 3018 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Genuine used OEM Haldex controller, bench-tested before dispatch and prepared to restore rear differential control, AWD engagement and stable communication with drivetrain electronics in compatible Gen 4 systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554C  •  0BR598554C  •  HAP542  •  5WP33523-04  •  115928-01  •  SW 3018  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554  •  0BR907554A  •  0BR907554B  •  0BR907554C  •  0BR598554  •  0BR598554A  •  0BR598554B  •  0BR598554C  •  5WP33523-01  •  5WP33523-02  •  5WP33523-03  •  5WP33523-04  •  114479-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33523-04\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 3018\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 4th generation Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed \/ Fully Tested \/ Functional\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Continental Haldex control unit with OEM number \u003cstrong style=\"color:#E3FC02;\"\u003e0BR907554C\u003c\/strong\u003e, designed for 4th generation Haldex AWD systems used across Volkswagen Group vehicles. The module manages rear axle engagement, controls clutch pressure through the hydraulic system and communicates with ABS, ESP and engine management electronics.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors speed difference between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls hydraulic pump pressure for rear clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e for clutch pressure regulation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 14px;\"\u003eTypical failures of the original controller can cause rear-drive loss, N373-related faults, no communication errors, pump faults or ESP \/ ABS warning lights. This tested OEM replacement is intended to restore stable AWD operation in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n Coding support is available if required after installation. If you need guidance with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eTypical applications for this Gen 4 Haldex control unit include the following vehicles. Always confirm the part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf VI \/ Beetle \/ Jetta (2009–2012)\u003c\/li\u003e\n \u003cli\u003eCaddy III (2010–2015)\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003cli\u003ePassat AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 \/ S3 (2009–2012)\u003c\/li\u003e\n \u003cli\u003eTT (2008–2012)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia II 4x4 (2008–2013)\u003c\/li\u003e\n \u003cli\u003eYeti (2009–2014)\u003c\/li\u003e\n \u003cli\u003eSuperb II 4x4 (2008–2014)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea XL (2010–2015)\u003c\/li\u003e\n \u003cli\u003eLeon (2009–2011)\u003c\/li\u003e\n \u003cli\u003eToledo (2009–2012)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit can trigger fault codes, communication problems and complete loss of rear-wheel engagement. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM \/ Internal Controller Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal Control Module Memory Error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or AWD malfunction\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex control unit on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the old module\u003c\/li\u003e\n \u003cli\u003eInstall the replacement unit and secure all mounting points properly\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eClear fault codes and carry out coding or adaptation if required\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm proper AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eInspect the rear wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck Haldex oil condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eInspect the pump before final installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f29b9c949db291938081df979187dc919d9f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or clutch pump can overload the AWD system and trigger recurring module-related diagnostic errors, engagement issues or loss of rear-wheel drive.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve, pump or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50433653080397,"sku":"1","price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0bs907554d-refurbished","title":"0BS907554D Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished OEM 0BS907554D Haldex control unit for Gen 4 AWD. Original Continental module for Audi, VW, Skoda and SEAT vehicles with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BS907554D, 0BS598554D, Haldex control unit, HAP542, 5WP33527-01, SW 4017, HW H43, Gen 4 Haldex, Continental, Passat, Tiguan, Sharan, Q3, Octavia, Superb, Alhambra\"\u003e\n \u003ctitle\u003e0BS907554D Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0BS907554D\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BS907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33527-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 4017 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, fully bench tested and prepared as a reliable OEM replacement for a faulty original Haldex controller. The unit is intended to restore stable rear differential control, proper AWD engagement and correct communication with drivetrain electronics.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554D  •  0BS598554D  •  HAP542  •  5WP33527-01  •  0BS 907 554 D  •  SW 4017  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554  •  0BS907554A  •  0BS907554B  •  0BS907554C  •  0BS907554D  •  0BS598554  •  0BS598554A  •  0BS598554B  •  0BS598554C  •  0BS598554D  •  5WP33527  •  5WP33524-01  •  5WP33524-02  •  5WP33524-03\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33527-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e4017\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BS907554D\u003c\/strong\u003e. It is a key electronic component of the fourth-generation Haldex all-wheel-drive system and is responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear differential clutch engagement in the 4th gen Haldex system\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eSupports stable rear axle engagement in changing traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0BS907554D is compatible with selected Volkswagen Group vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat CC\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Sharan\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi Q3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Alhambra\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Clutch control valve (N373)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication \/ intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module EEPROM error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e Internal control module memory error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication fault during diagnostics\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373 and related system components. A proper VAG-compatible diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the old module\u003c\/li\u003e\n \u003cli\u003eInstall the replacement unit and secure all mounting points properly\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCode or adapt the module if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"442d2a222b0427253637692127316a272b29\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex pump or the N373 clutch control valve can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#dbb2b5bdb49bb8baa9a8f6beb8aef5b8b4b6\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50489069240653,"sku":null,"price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_8f8488bd-83b5-4419-83bb-e8cce8cf6e41.jpg?v=1741337474"},{"product_id":"new-haldex-control-unit-0br907554c","title":"0BR907554C Haldex control unit New","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"New 0BR907554C Haldex control unit for VAG AWD vehicles. Continental Gen 4 rear differential module, SW 3018 \/ HW H43, 24-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BR907554C, 0BR598554C, HAP542, 5WP33523-04, 0BR907554A, 0BR907554B, Haldex control unit, Continental, Gen 4 Haldex, Golf 4Motion, Tiguan 4Motion, A3 Quattro, TT Quattro, Octavia 4x4\"\u003e\n \u003ctitle\u003e0BR907554C Haldex Control Unit Gen 4 | New Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eNew Haldex Control Unit 0BR907554C – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BR907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental rear differential control module for VAG AWD vehicles with 4th generation Haldex system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n New OEM \/ Factory Original\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33523-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 3018 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 24 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eNew OEM Haldex Module\u003c\/strong\u003e\n Factory-original Continental Haldex controller for Gen 4 AWD systems. Designed to restore proper rear differential control, reliable AWD engagement and stable communication with the vehicle drivetrain electronics.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554C  •  0BR598554C  •  HAP542  •  5WP33523-04  •  0BR 907 554 C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0BR907554  •  0BR907554A  •  0BR907554B  •  0BR907554C  •  0BR598554  •  0BR598554A  •  0BR598554B  •  0BR598554C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier References:\u003c\/strong\u003e\n \u003cp\u003eContinental  •  HAP542  •  5WP33523-04  •  SW 3018  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us for verification.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 3018\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNew OEM \/ Original Module\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCoding Note:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOnline coding assistance available if required after installation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine new original Continental Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BR907554C\u003c\/strong\u003e. It serves as the electronic management module for the rear AWD coupling system and is responsible for activating and regulating the rear differential clutch pack according to traction demand and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eHelps restore correct AWD performance when the original module has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0BR907554C is suitable for VAG group vehicles equipped with 4th generation Haldex AWD systems. Always verify the part number on your existing unit before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eS3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send the VIN number or part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following symptoms or diagnostic faults:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve problem\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights caused by AWD control failure\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 system malfunction\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool is recommended to read and code the Haldex AWD module correctly. Standard OBD readers often cannot access the controller directly.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Service Recommendations\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the old module\u003c\/li\u003e\n \u003cli\u003eInstall the replacement unit and secure all mounting points properly\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eCode the unit if required and clear all stored fault codes\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended at Time of Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eInspect the rear wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck Haldex oil condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eClear all stored AWD, ABS and ESP related faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, technical support is available to help with setup and compatibility questions. Reach us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"abc2c5cdc4ebc8cad9d886cec8de85c8c4c6\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or by using the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e24-Month Warranty:\u003c\/strong\u003e This new OEM Haldex control unit is supplied with a 24-month warranty and online support in case the module needs to be coded after installation.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eNew original OEM module\u003c\/li\u003e\n \u003cli\u003eVerified product condition before dispatch\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Does Not Cover\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without part-number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by installation errors or external vehicle faults\u003c\/li\u003e\n \u003cli\u003eRelated pump, valve or wiring defects outside the module itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact part number before ordering\u003c\/li\u003e\n \u003cli\u003eShipping worldwide is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not available at checkout, contact us directly for manual processing\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50529497579853,"sku":null,"price":499.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/169C9D19-3C9A-461E-A7A1-36312923A27D.jpg?v=1721201953"},{"product_id":"haldex-control-unit-0ay907554j","title":"0AY907554J Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"0AY907554J Haldex Control Unit Gen 5 AWD – refurbished OEM BorgWarner controller for Volkswagen, Audi, Skoda and SEAT AWD vehicles. Fully tested, ready to restore proper AWD performance, with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554J, 0AY907554F, Haldex control unit, Gen 5 Haldex, BorgWarner AWD controller, 01324, 01316, VW Golf Haldex, Tiguan AWD module, Audi Q3 Haldex ECU, Skoda Kodiaq Haldex, SEAT Ateca Haldex\"\u003e\n \u003ctitle\u003e0AY907554J Haldex Control Unit Gen 5 AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n .fault-codes ul { column-count: 1; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554J – Gen 5 AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003e0AY907554J\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal BorgWarner rear differential control module for VAG 5th generation Haldex AWD vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 5 (5th Generation)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used \/ Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW: 7540  \/  HW: H52\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCompatible ECU\u003c\/strong\u003e\n 0AY907554F  \/  0AY907554J\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupport\u003c\/strong\u003e\n Online Coding Assistance Included\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally prepared replacement Haldex controller for Gen 5 AWD systems. Designed to restore stable rear axle engagement, proper system communication and reliable all-wheel-drive function in compatible VAG vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e0AY907554J  •  0AY 907 554 J\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Related ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554F  •  0AY907554J\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eModule References:\u003c\/strong\u003e\n \u003cp\u003eBorgWarner  •  SW:7540  •  HW:H52\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Please compare the exact part number printed on your current Haldex control unit before ordering. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 7540\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H52\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 5th generation Haldex coupling\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eCompatible ECU:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0AY907554F \/ 0AY907554J\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed \/ Fully Tested \/ Functional\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is an original BorgWarner Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554J\u003c\/strong\u003e, intended for 5th generation Haldex AWD systems used in a wide range of Volkswagen Group vehicles. The module controls rear differential engagement, communicates with ABS \/ ESP systems and helps restore correct torque transfer to the rear axle.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the vehicle’s ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eStores and reports diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eHelps restore AWD performance after control unit failure\u003c\/li\u003e\n \u003cli\u003eSupports traction and stability in low-grip driving conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003eA faulty Gen 5 Haldex ECU can cause AWD disengagement, no-communication faults, intermittent ABS-related errors or dashboard ESP \/ ABS warning lights. This tested replacement unit is prepared to help restore normal AWD function in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding Support\u003c\/strong\u003e\n Functionality warranty and online support are included in case the module needs coding after installation. If you need assistance with diagnostics or setup, contact us and we will help with the correct procedure.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThis 5th generation Haldex controller is used across a broad range of VAG AWD vehicles. Always verify the exact part number on the original module before purchase:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf AWD \/ 4Motion\u003c\/li\u003e\n \u003cli\u003ePassat AWD \/ 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan AWD\u003c\/li\u003e\n \u003cli\u003eSharan AWD\u003c\/li\u003e\n \u003cli\u003eTransporter AWD\u003c\/li\u003e\n \u003cli\u003eCaddy AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA1 Quattro\u003c\/li\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003cli\u003eQ2 Quattro\u003c\/li\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eKodiaq 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eKaroq 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLeon 4Drive\u003c\/li\u003e\n \u003cli\u003eAteca 4Drive\u003c\/li\u003e\n \u003cli\u003eArona AWD applications\u003c\/li\u003e\n \u003cli\u003eTarraco 4Drive\u003c\/li\u003e\n \u003cli\u003eAlhambra AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or the part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eProblems with the Haldex control unit can trigger communication faults and AWD malfunctions. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory \/ Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lamps illuminated on dashboard\u003c\/li\u003e\n \u003cli\u003eAWD not working correctly or rear axle not engaging\u003c\/li\u003e\n \u003cli\u003eIntermittent traction loss or drivetrain fault behavior\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Service Notes\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eDisconnect the battery before accessing the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the housing and connectors for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Checks\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eCheck Haldex pump operation and electrical supply\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connectors for intermittent communication issues\u003c\/li\u003e\n \u003cli\u003eVerify AWD operation after installation and road test\u003c\/li\u003e\n \u003cli\u003eReview related ABS \/ ESP fault memory if communication errors persist\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eIf you have any questions about compatibility, diagnostics or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eThe photos are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact directly for manual processing\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003cli\u003eVehicle fitment should always be confirmed by the original ECU number\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\u003c\/div\u003e\n\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":50529520681293,"sku":null,"price":299.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/photo_2024-10-01_15-00-15.jpg?v=1727787823"},{"product_id":"haldex-control-unit-09n907554c-refurbished","title":"09N907554C Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"09N907554C Haldex Control Unit Gen 4 AWD – refurbished Continental OEM for Volkswagen T5, Multivan and California AWD applications. Fully tested, 12-month warranty, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"09N907554C, 09N907554B, 09N907554A, HAP542, 5WP33526-05, 119840-02, Haldex control unit, Gen 4 Haldex, Continental Haldex ECU, VW T5 Multivan California AWD\"\u003e\n \u003ctitle\u003e09N907554C Haldex Control Unit Gen 4 AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 09N907554C – Gen 4 AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 09N907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM rear differential control module for Volkswagen T5, Multivan and California AWD applications\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33526-05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 6010 \/ HW H44\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished Haldex controller with new silicone seal and new cover, designed to restore proper AWD function, rear axle engagement and stable communication in compatible Volkswagen T5-series vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e09N907554C  •  09N 907 554 C  •  HAP542  •  5WP33526-05  •  119840-02  •  SW 6010  •  HW H44\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e09N907554  •  09N907554A  •  09N907554B  •  09N907554C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33526-05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 6010\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H44\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eContinental Part Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e119840-02\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen T5, Multivan and California AWD with 4th Gen Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Resealed\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished OEM Haldex control unit with part number \u003cstrong style=\"color:#E3FC02;\"\u003e09N907554C\u003c\/strong\u003e, intended for 4th-generation Haldex AWD systems in Volkswagen T5-series vehicles. The module controls rear differential engagement, supports torque transfer to the rear axle and communicates with the vehicle’s drivetrain, ABS and ESP systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls hydraulic activation of the Haldex coupling for rear-wheel engagement\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD \/ 4x4 operation in T5, Multivan and California applications\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and related drivetrain systems\u003c\/li\u003e\n \u003cli\u003eStores and reports diagnostic trouble codes when faults occur\u003c\/li\u003e\n \u003cli\u003eSupports traction and stability in low-grip road conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 14px;\"\u003eA faulty Haldex ECU can cause AWD disengagement, communication errors or ESP \/ ABS warning lights on the dashboard. This refurbished unit is fully tested and upgraded with new silicone and a new cover for dependable long-term use.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n Coding support is available if required after installation. If you need diagnostic guidance or setup help, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eThis Haldex controller is intended for Volkswagen T5-series AWD vehicles using the matching Gen 4 rear differential control unit. Always confirm the exact number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eTransporter T5 AWD\u003c\/li\u003e\n \u003cli\u003eMultivan AWD\u003c\/li\u003e\n \u003cli\u003eCalifornia AWD\u003c\/li\u003e\n \u003cli\u003eSelected Volkswagen T5 platform vehicles with matching 09N907554C \/ 09N907554B \/ 09N907554A controller\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can trigger fault codes, communication problems and loss of AWD function. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump (V181) Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve problem\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eAWD not working correctly or rear axle not engaging\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect connector pins and housing for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eCheck wiring, connectors and surrounding module area\u003c\/li\u003e\n \u003cli\u003eInspect the Haldex pump and related AWD components\u003c\/li\u003e\n \u003cli\u003eVerify AWD operation after installation and road test\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f990979f96b99a988b8ad49c9a8cd79a9694\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture ingress and poor sealing can affect the control unit housing and electronics, leading to corrosion, unstable communication and AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or related pump components can trigger repeated faults, poor clutch engagement and loss of rear axle drive.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eInternal controller faults, worn electronic components or memory problems can cause intermittent operation or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged connectors, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve, pump or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eReplacing the Haldex valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50600719647053,"sku":"","price":449.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_304585b2-bd30-4733-ae97-aee2f4cd5f24.jpg?v=1741337252"},{"product_id":"haldex-control-unit-7h0907554e-refurbished","title":"7H0907554E Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 7H0907554E Haldex control unit for Volkswagen T5 4Motion. Continental Gen 2 AWD module, fully tested with 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"7H0907554E, 7H0 907 554 E, 7H0907554, Haldex control unit, Volkswagen T5 4Motion, Transporter AWD, Multivan AWD, Continental, HAP511, 5WP22223-04, SW 2109, HW H05, Gen 2 Haldex\"\u003e\n \u003ctitle\u003e7H0907554E Haldex Control Unit Gen 2 | Refurbished Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 7H0907554E – Volkswagen T5 AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 7H0907554E\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM rear differential control module for Volkswagen T5 4Motion, Transporter and Multivan AWD applications with 2nd generation Haldex.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511 \/ 5WP22223-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 2109 \/ HW H05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished Haldex controller with new silicone and cover for durability close to a new module. Designed to restore proper AWD function, rear axle engagement and stable communication in VW T5 4Motion vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e7H0907554E  •  7H0 907 554 E\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Related ECU Number:\u003c\/strong\u003e\n \u003cp\u003e7H0907554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP511  •  Siemens 5WP22223-04  •  SW 2109  •  HW H05\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Please compare the part number printed on your current Haldex control unit before ordering. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511 \/ Siemens 5WP22223-04\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 2109\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H05\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolkswagen T5 4Motion \/ Transporter \/ Multivan with Gen 2 Haldex AWD\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Resealed\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e7H0907554E\u003c\/strong\u003e, intended for second-generation Haldex AWD systems in Volkswagen T5 platform vehicles. The module controls rear differential engagement, supports traction transfer to the rear axle and communicates with the vehicle’s drivetrain and stability systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls hydraulic activation of the Haldex coupling for rear-wheel engagement\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD \/ 4x4 operation in Volkswagen T5 applications\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and related drivetrain systems\u003c\/li\u003e\n \u003cli\u003eStores and reports diagnostic trouble codes when faults occur\u003c\/li\u003e\n \u003cli\u003eSupports traction and stability in low-grip road conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Functionality warranty and online support are included in case the module needs coding or setup after installation. If you need diagnostic advice, contact us and we will help with the correct procedure.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex controller is intended for Volkswagen T5-based AWD vehicles using the matching Gen 2 rear differential control unit. Always verify the exact number on your original module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eT5 4Motion\u003c\/li\u003e\n \u003cli\u003eTransporter AWD\u003c\/li\u003e\n \u003cli\u003eMultivan AWD\u003c\/li\u003e\n \u003cli\u003eSelected Volkswagen T5 platform vehicles with matching 7H0907554E \/ 7H0907554 controller\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or the part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can trigger communication faults, valve faults or warning lights on the dashboard. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Valve for Controlling Clutch Operating Angle (N373): Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve fault\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lamps illuminated on dashboard\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or 4x4 \/ AWD not working correctly\u003c\/li\u003e\n \u003cli\u003eRear axle disengagement or loss of traction support\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect the connector pins and housing for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace the Haldex control valve N373 when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eCheck the wiring, connectors and surrounding module area\u003c\/li\u003e\n \u003cli\u003eInspect the Haldex system for stored drivetrain or stability-control faults\u003c\/li\u003e\n \u003cli\u003eVerify AWD operation after installation and road test\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater or condensation inside the module housing can damage the electronics and interrupt communication with the AWD system.\u003c\/p\u003e\n\n \u003ch3\u003e2. N373 Valve or Hydraulic Faults\u003c\/h3\u003e\n \u003cp\u003eA failing clutch control valve or hydraulic issue can overload the control unit and trigger repeated AWD-related faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and temperature cycling can lead to internal circuit failure, communication loss and unstable rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Problems\u003c\/h3\u003e\n \u003cp\u003eCorroded plugs, damaged wiring or weak power supply can create no-communication errors and unreliable AWD function.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics or installation, contact us and we will help you choose the correct Haldex solution for your Volkswagen AWD vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact directly for manual processing\u003c\/li\u003e\n \u003cli\u003eReplacing the Haldex valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50600820343117,"sku":"","price":489.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_87f66f58-f6f8-4e87-a808-e19f16e3284c.jpg?v=1741337458"},{"product_id":"haldex-control-unit-1k0907554k","title":"1K0907554K Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"1K0907554K Haldex Control Unit Gen 2 AWD – refurbished Siemens OEM for VW Passat B6 4Motion and selected Volkswagen Group AWD models with 2nd generation Haldex. Fully tested, 12-month warranty, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554K, 1K0907554E, 1K0907554C, 1K0907554H, Haldex control unit, Gen 2 Haldex, HAP511nm, 5WP22243-01, Siemens Haldex ECU, AWD control module, Passat B6 4Motion Haldex, VAG AWD controller\"\u003e\n \u003ctitle\u003e1K0907554K Haldex Control Unit Gen 2 AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 1K0907554K\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554K\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 2 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511nm \/ 5WP22243-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 1118 \/ HW H06\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, sealed with new silicone and fully tested before dispatch. It is supplied as a dependable OEM replacement for a faulty original Haldex controller in Gen 2 AWD systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554K  •  1K0 907 554 K  •  HAP511nm  •  5WP22243-01  •  109430-01  •  SW 1118  •  HW H06\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554C  •  1K0907554E  •  1K0907554H  •  1K0907554K  •  5WP22232-01  •  5WP22234-01  •  108710-02  •  107718-01  •  5WP22231-02  •  107434-02\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511nm \/ 5WP22243-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 1118\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H06\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with Gen 2 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eKnown Compatible ECU:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e1K0907554E\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Resealed\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color:#E3FC02;\"\u003e1K0907554K\u003c\/strong\u003e, developed for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module manages rear axle engagement by controlling the hydraulic operation of the Haldex clutch and communicating with ABS \/ ESP and drivetrain systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the vehicle’s ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pre-charge pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD function in normal driving and low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 14px;\"\u003eA faulty Gen 2 Haldex ECU can cause total loss of rear drive, intermittent AWD operation, CAN communication errors, or ESP \/ ABS warning lights. This refurbished version is resealed with new silicone and intended as a reliable replacement for failed 1K0907554K \/ 1K0907554E control units.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n Coding support is available if required after installation. If you need guidance with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eTypical applications for this Gen 2 Haldex control unit include the following vehicles. Always confirm the part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003ePassat B6 4Motion (2005–2009) – with electric parking brake (EPB)\u003c\/li\u003e\n \u003cli\u003eSelected Volkswagen AWD models using the same Gen 2 Haldex controller family\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSelected Audi Quattro models using the same Gen 2 Haldex controller family\u003c\/li\u003e\n \u003cli\u003ePlease verify ECU number against the original unit\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSelected Škoda 4x4 models with compatible Gen 2 Haldex electronics\u003c\/li\u003e\n \u003cli\u003ePlease verify ECU number before purchase\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSelected SEAT AWD models with Gen 2 Haldex\u003c\/li\u003e\n \u003cli\u003ePlease verify ECU number before purchase\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit can trigger fault codes, communication problems and complete loss of rear-wheel engagement. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Control Module EEPROM Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal Control Module Memory Error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or intermittent AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and access the rear differential Haldex module safely\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect connectors for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD communication with a diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if requested by the vehicle\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eInspect the pre-charge pump and related wiring\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"4821262e27082b293a3b652d2b3d662b2725\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture, worn seals and housing contamination can affect the control unit electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or pump can overload the AWD system and trigger recurring module-related diagnostic errors, communication faults or loss of rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve, pump or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50600847966541,"sku":"","price":389.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_b8d117e2-3718-421f-84dc-1196e36c5c4c.jpg?v=1741337185"},{"product_id":"haldex-control-unit-1k0907554f","title":"1K0907554F Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished OEM 1K0907554F Haldex control unit for Gen 2 AWD. Original Siemens module for Audi, VW, Skoda and SEAT vehicles with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554F, Haldex control unit, Gen 2 Haldex, HAP511, 5WP22232-02, SW 0115, HW H05, 107718-02, Siemens, Golf R32, Passat, A3, S3, TT, Octavia, Superb, Fabia, Altea\"\u003e\n \u003ctitle\u003e1K0907554F Haldex Control Unit Gen 2 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 1K0907554F\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554F\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 2 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511 \/ 5WP22232-02\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0115 \/ HW H05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, sealed with new silicone and fully tested before dispatch. It is supplied as a dependable OEM replacement for a faulty original Haldex controller and helps restore stable AWD communication and rear axle engagement.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554F  •  1K0 907 554 F  •  HAP511  •  5WP22232-02  •  107718-02  •  SW 0115  •  HW H05\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554  •  1K0907554B  •  1K0907554C  •  1K0907554F\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD \/ 4x4 vehicles with Gen 2 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511 \/ 5WP22232-02\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eVW \/ Siemens Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e107718-02\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e0115\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished OEM Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e1K0907554F\u003c\/strong\u003e. It is a key electronic component of the second-generation Haldex all-wheel-drive system and is responsible for controlling the hydraulic operation of the Haldex clutch and rear axle engagement when traction is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors AWD system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD function in normal driving and low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 1K0907554F is compatible with selected Volkswagen Group vehicles equipped with Gen 2 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Golf\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf R32\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3\u003c\/li\u003e\n \u003cli\u003eAudi S3\u003c\/li\u003e\n \u003cli\u003eAudi TT\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb\u003c\/li\u003e\n \u003cli\u003eŠkoda Fabia\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Altea\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eLoss of AWD \/ 4x4 function or no rear axle engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control module defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex clutch pump (V181) faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e All Wheel Drive Control Module (J492) no communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Valve for controlling clutch operating angle (N373) defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e Control module defective \/ internal fault\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lamps illuminated on dashboard\u003c\/li\u003e\n \u003cli\u003eNo communication with AWD module during diagnostics\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or AWD not working at all\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373, pump and connector condition. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect connectors for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eFit the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and check AWD module communication with suitable diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eCarry out any required coding or adaptation if your vehicle requests it\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"80e9eee6efc0e3e1f2f3ade5e3f5aee3efed\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or pump can overload the system and trigger repeated module-related diagnostic errors.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eInternal circuit faults, controller wear and communication failure can cause intermittent operation or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to controller operation under normal use\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#9af3f4fcf5daf9fbe8e9b7fff9efb4f9f5f7\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking the N373 valve is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50600858353997,"sku":"1","price":389.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_06498f1f-57e4-4f7f-996e-de5040a6735a.jpg?v=1741337150"},{"product_id":"haldex-steuergerat-1-generation","title":"02D525554 \/ 02D900554 Haldex control unit 1. Generation Used","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e \u003cmeta content=\"Used OEM Haldex control unit for 1st generation VAG AWD vehicles. Compatible with 02D525554 and 02D900554-series modules, 12-month warranty.\" name=\"description\"\u003e \u003cmeta content=\"Haldex control unit 1st generation, 02D525554, 02D900554A, 02D900554B, 02D900554C, 02D900554D, 02D900554DV, 02D900554DX, 02D900554E, Golf Mk4 R32, Audi TT 8N Quattro, Audi S3 8L, Octavia Mk1 4x4, Leon 1M Cupra4\" name=\"keywords\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.1em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"product-header\"\u003e\n\u003ch1\u003eUsed OEM Haldex Control Unit 1st Generation – VAG AWD\u003c\/h1\u003e\n\u003cdiv class=\"part-number\"\u003eOEM Numbers: 02D525554 \/ 02D900554 Series\u003c\/div\u003e\n\u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Haldex control unit for first-generation VAG all-wheel-drive systems used in selected Volkswagen, Audi, Škoda and SEAT vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003cdiv class=\"key-features\"\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eSystem Type\u003c\/strong\u003e Haldex AWD 1st Generation\u003c\/div\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eCondition\u003c\/strong\u003e Used – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e Original OEM\u003c\/div\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eOEM Compatibility\u003c\/strong\u003e 02D525554 \/ 02D900554 Series\u003c\/div\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e Rear Axle Differential Control Unit\u003c\/div\u003e\n\u003cdiv class=\"feature-box\"\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e 12 Months\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"success-box\"\u003e\n\u003cstrong\u003eUsed \u0026amp; Verified Working Unit\u003c\/strong\u003e Tested original Haldex controller for 1st generation AWD systems, intended to restore rear-wheel-drive engagement, module communication and correct AWD operation in compatible VAG vehicles.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n\u003cdiv class=\"oem-numbers\"\u003e\n\u003cstrong\u003eCompatible OEM Numbers:\u003c\/strong\u003e\n\u003cp\u003e02D525554  •  02D900554A  •  02D900554B  •  02D900554C  •  02D900554D  •  02D900554DV  •  02D900554DX  •  02D900554E\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warning-box\"\u003e\n\u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e Please compare the OEM number on your current Haldex control unit before ordering. Vehicle model alone is not always enough to guarantee compatibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"technical-specs\"\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 1st Generation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Axle Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOriginal OEM\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCompatible OEM Range:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e02D525554 \/ 02D900554A \/ B \/ C \/ D \/ DV \/ DX \/ E\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSelected Volkswagen Group vehicles with 1st generation Haldex AWD\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThis is a used original Haldex control unit designed for \u003cstrong style=\"color: #e3fc02;\"\u003efirst-generation Haldex AWD systems\u003c\/strong\u003e used in various Volkswagen Group vehicles. The controller manages rear differential engagement and helps restore correct all-wheel-drive function when the original module has failed.\u003c\/p\u003e\n\u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n\u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n\u003cli\u003eControls rear axle engagement in first-generation Haldex AWD systems\u003c\/li\u003e\n\u003cli\u003eSupports proper communication with the AWD module\u003c\/li\u003e\n\u003cli\u003eHelps restore rear-wheel-drive function when the original controller fails\u003c\/li\u003e\n\u003cli\u003eSupports stable AWD performance and traction operation\u003c\/li\u003e\n\u003cli\u003eProvides a tested replacement for compatible VAG applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 18px;\"\u003eCommon failure symptoms include loss of rear-wheel drive, communication faults with the AWD system, or dashboard warning lights such as ESP \/ ABS. This tested unit offers a practical replacement for restoring AWD performance.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n\u003cstrong\u003eCoding \/ Installation Assistance\u003c\/strong\u003e Online support is available in case the module needs coding guidance after installation. If you are unsure about fitment or setup, contact us before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis first-generation Haldex control unit is intended for selected VAG AWD vehicles using a matching OEM controller number.\u003c\/p\u003e\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cdiv class=\"compatibility-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eVolkswagen Golf Mk4 R32\u003c\/li\u003e\n\u003cli\u003eAudi TT 8N Quattro\u003c\/li\u003e\n\u003cli\u003eAudi S3 8L\u003c\/li\u003e\n\u003cli\u003eSkoda Octavia Mk1 4x4\u003c\/li\u003e\n\u003cli\u003eSeat Leon 1M Cupra4\u003c\/li\u003e\n\u003cli\u003eSelected Skoda, Volkswagen, Audi and SEAT AWD models using matching OEM numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warning-box\"\u003e\n\u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e Please check whether this module is suitable for your car. Send us your VIN number or a photo of the original module label and we will help verify fitment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eCommon Faults \u0026amp; Symptoms\u003c\/h2\u003e\n\u003cp\u003eWhen the Haldex control unit fails, your 4x4 \/ AWD system may malfunction or stop working completely. Typical symptoms mentioned for this unit include:\u003c\/p\u003e\n\u003cdiv class=\"fault-codes\"\u003e\n\u003cul\u003e\n\u003cli\u003eNo communication with the AWD module\u003c\/li\u003e\n\u003cli\u003eLoss of rear-wheel drive \/ rear axle not engaging\u003c\/li\u003e\n\u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n\u003cli\u003eIntermittent or non-functioning AWD operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n\u003cli\u003eVerify that the OEM number on the replacement module matches your original controller\u003c\/li\u003e\n\u003cli\u003eInspect the connector and surrounding wiring before installation\u003c\/li\u003e\n\u003cli\u003eInstall the module carefully on the rear differential system\u003c\/li\u003e\n\u003cli\u003eClear stored faults and confirm correct AWD communication after fitting\u003c\/li\u003e\n\u003cli\u003eUse diagnostics if coding or adaptation is required for your vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Checks\u003c\/h3\u003e\n\u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n\u003cli\u003eInspect the Haldex wiring and connector condition\u003c\/li\u003e\n\u003cli\u003eCheck for stored AWD, ESP or ABS faults\u003c\/li\u003e\n\u003cli\u003eVerify rear-wheel-drive engagement after installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"warning-box\"\u003e\n\u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e If you have any questions about installation, coding guidance or compatibility, contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"dcb5b2bab39cbfbdaeaff1b9bfa9f2bfb3b1\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong style=\"color: #e3fc02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit is supplied with a 12-month warranty and is checked before dispatch.\u003c\/p\u003e\n\u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n\u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n\u003cli\u003eVerified basic functionality before shipping\u003c\/li\u003e\n\u003cli\u003ePre-purchase compatibility guidance\u003c\/li\u003e\n\u003cli\u003eSupport in case coding guidance is needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty Does Not Cover\u003c\/h3\u003e\n\u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n\u003cli\u003eIncorrect ordering without OEM-number verification\u003c\/li\u003e\n\u003cli\u003eVehicle-side wiring, ABS, ESP or drivetrain faults\u003c\/li\u003e\n\u003cli\u003eDamage caused during improper installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n\u003cp\u003eIf you have any questions and need advice, please contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-section\"\u003e\n\u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n\u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n\u003cli\u003ePlease check whether this module is suitable for your car before ordering\u003c\/li\u003e\n\u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n\u003cli\u003eIf you need advice, contact us by email or WhatsApp via the contact page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Cars-Ecu","offers":[{"title":"Default Title","offer_id":50874037731661,"sku":null,"price":299.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6721.jpg?v=1737204360"},{"product_id":"haldex-control-unit-2k0907554a-refurbished","title":"2K0907554A Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished OEM 2K0907554A Haldex control unit for Gen 4 AWD. Original Continental module for Volkswagen Caddy AWD vehicles with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"2K0907554A, Haldex control unit, Gen 4 Haldex, HAP542, 5WP33525-04, SW 5005, HW H43, 114477-01, Continental, Caddy 4Motion, Caddy AWD, Caddy Maxi 4Motion\"\u003e\n \u003ctitle\u003e2K0907554A Haldex Control Unit Gen 4 | Refurbished OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 2K0907554A\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 2K0907554A\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Volkswagen Caddy vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33525-04\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 5005 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, sealed with new silicone and fitted with a new cover. Fully tested before dispatch for durability similar to a new module and supplied as a reliable OEM replacement.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e2K0907554A  •  2K0 907 554 A  •  HAP542  •  5WP33525-04  •  5WP33525  •  114477-01  •  SW 5005  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e2K0907554A  •  2K0907554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your existing Haldex control unit and confirm it matches the references listed above. If you are unsure about compatibility, contact us and we will help verify fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Caddy AWD vehicles with Gen 4 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33525-04\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eContinental Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e114477-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e5005\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eH43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Continental Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e2K0907554A\u003c\/strong\u003e, developed for Volkswagen Caddy AWD vehicles equipped with the 4th generation Haldex system. The module manages rear axle engagement by controlling hydraulic pressure inside the Haldex coupling and communicating with the vehicle AWD, ABS and ESP systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear-wheel engagement when extra traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pump and clutch pressure strategy in the Haldex coupling\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD operation when the original ECU has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Coding or adaptation may be required after installation depending on the vehicle configuration, and online support is available if needed.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex control unit is intended for Volkswagen Caddy AWD applications. Always confirm the part number on your old module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Caddy 4Motion\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy AWD\u003c\/li\u003e\n \u003cli\u003eVolkswagen Caddy Maxi 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this control unit fits your vehicle, send us your VIN number or the OEM number from your existing module. We will help confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit commonly causes the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e Control Module defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e Haldex Clutch Pump electrical fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e Haldex Control Valve N373 fault \/ defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e AWD module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e Haldex valve related fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e Warning lights caused by AWD malfunction\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive or intermittent AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n If this module is being replaced, it is recommended to inspect the Haldex control valve N373, pump condition, wiring and connector pins. A proper diagnostic scan should be carried out before and after installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex ECU on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required by the vehicle after installation\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If you need help with coding, diagnostics or compatibility, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"e28b8c848da281839091cf878197cc818d8f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Connector Corrosion\u003c\/h3\u003e\n \u003cp\u003eMoisture and contamination at the connector or housing can damage internal electronics and lead to unstable communication or total AWD failure.\u003c\/p\u003e\n\n \u003ch3\u003e2. Pump or Valve Related Faults\u003c\/h3\u003e\n \u003cp\u003eIssues with the Haldex pump or N373 control valve can overload the system and trigger repeated control module faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eInternal circuit wear and electronic failure can cause intermittent operation, no communication faults or complete loss of rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading drivetrain-related errors.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to controller operation under normal use\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#c5acaba3aa85a6a4b7b6e8a0a6b0eba6aaa8\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50924267503949,"sku":"1","price":449.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_7a98dd84-254a-4199-b62c-ee3cdb843030.jpg?v=1741337123"},{"product_id":"haldex-control-unit-1k0907554a-refurbished","title":"1K0907554A Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 1K0907554A Haldex control unit for VAG AWD vehicles. Siemens Gen 2 rear differential module, SW 0105 \/ HW H05, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554A, 1K0 907 554 A, 5WP2222-01, HAP511, Haldex control unit, Siemens, Gen 2 Haldex, Audi A3 Quattro, TT Quattro, Golf R32, Passat 4Motion, Octavia 4x4, Altea 4Drive\"\u003e\n \u003ctitle\u003e1K0907554A Haldex Control Unit Gen 2 | Refurbished Siemens OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished OEM Haldex Control Unit 1K0907554A – VAG AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554A\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential control module for Volkswagen Group vehicles with 2nd generation Haldex AWD.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511 \/ 5WP2222-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 0105 \/ HW H05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eRefurbished \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished, sealed with new silicone and fully tested replacement Haldex controller for Gen 2 AWD systems. Designed to restore rear axle engagement and reliable communication with the AWD system in compatible VAG vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554A  •  1K0 907 554 A  •  1K0907554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP511  •  5WP2222-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eVersion Details:\u003c\/strong\u003e\n \u003cp\u003eSW 0105  •  HW H05\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the printed number on your existing Haldex controller. Vehicle model alone is not always enough to guarantee correct fitment.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511 \/ 5WP2222-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 0105\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H05\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with 2nd generation Haldex coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Resealed\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e1K0907554A\u003c\/strong\u003e, developed for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module manages rear axle engagement by controlling the hydraulic operation of the Haldex clutch and communicating with ABS \/ ESP and drivetrain systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the vehicle’s ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pre-charge pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD function in normal driving and low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eA faulty Gen 2 Haldex ECU can cause total loss of rear drive, intermittent AWD operation, CAN communication errors, or ESP \/ ABS warning lights. This refurbished version is resealed with new silicone for durability comparable to a new module and is tested before dispatch.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need advice with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eCommon applications for this 2nd generation Haldex control unit include the following VAG AWD vehicles. Always confirm the part number on your old module before purchase:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf Mk5 R32\u003c\/li\u003e\n \u003cli\u003ePassat B6 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 8P Quattro\u003c\/li\u003e\n \u003cli\u003eTT Mk2 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia Mk2 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your original Haldex module label and we will help verify the correct controller before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can trigger communication faults, pump or valve errors and warning lights on the dashboard. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex clutch pump (V181): faulty \/ open circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): no communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Valve for controlling clutch operating angle (N373): defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Internal control module fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve fault\u003c\/li\u003e\n \u003cli\u003eTraction control, ESP or ABS warning light remains illuminated\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or AWD system disabled\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect connector pins for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check AWD communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out any required coding or adaptation if requested by the vehicle\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck the Haldex clutch pump if pump-related faults are stored\u003c\/li\u003e\n \u003cli\u003eInspect or replace the Haldex control valve N373 when faulty\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid where applicable\u003c\/li\u003e\n \u003cli\u003eInspect wiring, connectors and surrounding module housing\u003c\/li\u003e\n \u003cli\u003ePerform professional diagnostic checks after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"a2cbccc4cde2c1c3d0d18fc7c1d78cc1cdcf\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater or condensation inside the housing can damage internal electronics and interrupt communication with the AWD system.\u003c\/p\u003e\n\n \u003ch3\u003e2. Pump or Valve Faults\u003c\/h3\u003e\n \u003cp\u003eRepeated faults in the Haldex pump or N373 valve can overload the controller and trigger recurring AWD and traction issues.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, heat and vibration can lead to internal circuit damage, memory errors and unstable rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Problems\u003c\/h3\u003e\n \u003cp\u003eCorroded plugs, weak power supply or damaged wiring can cause no-communication errors and intermittent AWD operation.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit is supplied with a 12-month warranty for the product itself and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified functionality of the controller hardware\u003c\/li\u003e\n \u003cli\u003eBench-tested operation before shipping\u003c\/li\u003e\n \u003cli\u003eBasic pre-purchase compatibility guidance\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Does Not Cover\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without part-number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, moisture ingress or improper installation\u003c\/li\u003e\n \u003cli\u003eExternal pump, valve or vehicle-side electrical faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics, or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact part number on your original module before placing an order\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact us directly\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking the N373 valve is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50924290408781,"sku":"","price":389.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_315c45c4-f403-44b9-9eb1-758b73b5568f.jpg?v=1741337098"},{"product_id":"haldex-control-unit-0br907554b-refurbished","title":"0BR907554B Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0BR907554B Haldex Control Unit 4th Gen. Tested \u0026amp; functional, 12-month warranty. Continental OEM. Fits VW Golf, Tiguan, Sharan, Audi A3, S3, TT, Skoda Octavia, Superb, Yeti and SEAT AWD models.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BR907554B, 0BR598554B, 0BR907554B, 0BR907554, 0BR598554A, 0BR598554, Haldex control unit, 4th generation Haldex, AWD control unit, Continental, 5WP33523-03, HAP542, VW Golf, Tiguan, Audi A3, S3, TT, Skoda Octavia\"\u003e\n \u003ctitle\u003e0BR907554B Haldex Control Unit 4th Gen AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n @media (max-width: 768px) { .btn-contact { width: 100%; max-width: 300px; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0BR907554B – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BR907554B\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Continental – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW: 3017  \/  HW: H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control unit is professionally refurbished, resealed with new silicone, and bench-tested prior to dispatch to verify full functionality. This gives durability similar to a new module and it is ready for direct installation into compatible AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554B  •  0BR598554B  •  HAP542  •  5WP33523-03  •  0BR 907 554 B\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0BR907554  •  0BR907554A  •  0BR907554B  •  0BR598554  •  0BR598554A  •  0BR598554B\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 3017\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – Fully Tested \u0026amp; Resealed\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine refurbished original Continental Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BR907554B\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system, responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0BR907554B is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eS3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes or symptoms:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights caused by AWD control failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eRefurbished unit is resealed with new silicone for durability similar to a new module\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the used control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":50924308955469,"sku":"","price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/29D58F76-42B9-4705-9213-D0A3DE72DEE4.jpg?v=1741337029"},{"product_id":"haldex-control-unit-1k0907554c-refurbished","title":"1K0907554C Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"1K0907554C Haldex Control Unit Gen 2 AWD – refurbished Siemens OEM for VW Tiguan, Golf, Passat, Audi A3, TT, Skoda Octavia and SEAT models. Fully tested, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554C, 1K0907554C, 1K0907554A, 1K0907554, Haldex control unit, Gen 2 Haldex, HAP511, 5WP22232-01, Siemens Haldex ECU, AWD control module, VW Tiguan Haldex, Audi TT quattro Haldex, Skoda Octavia 4x4\"\u003e\n \u003ctitle\u003e1K0907554C Haldex Control Unit Gen 2 AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 1K0907554C – Gen 2 AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003e1K0907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for 2nd Generation Haldex AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 2 (2nd Generation)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW: 0108  \/  HW: H05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511  \/  5WP22232-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupport\u003c\/strong\u003e\n Online Coding Assistance Included\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished, sealed with new silicone and fully tested replacement Haldex controller for Gen 2 AWD systems. Designed to restore rear axle engagement and reliable communication with the AWD system in compatible VAG vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e1K0907554C  •  1K0 907 554 C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Related OEM Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554C  •  1K0907554B  •  1K0907554A  •  1K0907554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier References:\u003c\/strong\u003e\n \u003cp\u003eHAP511  •  5WP22232-01  •  SW:0108  •  HW:H05\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Please compare the part number printed on your current Haldex control unit before ordering. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511 \/ 5WP22232-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0108\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with Gen 2 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested \/ Resealed\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e1K0907554C\u003c\/strong\u003e, developed for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module manages rear axle engagement by controlling the hydraulic operation of the Haldex clutch and communicating with ABS \/ ESP and drivetrain systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with the vehicle’s ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pre-charge pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD function in normal driving and low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003eA faulty Gen 2 Haldex ECU can cause total loss of rear drive, intermittent AWD operation, CAN communication errors, or ESP \/ ABS warning lights. This refurbished version is resealed with new silicone for durability comparable to a new module and is tested before dispatch.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need advice with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eCommon applications for this 2nd generation Haldex control unit include the following VAG AWD vehicles. Always confirm the part number on your old module before purchase:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eGolf 4Motion \/ R32\u003c\/li\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eFabia 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea 4x4\u003c\/li\u003e\n \u003cli\u003eSelected SEAT AWD models with Gen 2 Haldex\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or the part number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eProblems with the Haldex control unit can trigger communication faults, pump faults, valve faults, or warning lights on the dashboard. Common fault codes include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump (V181): Faulty \/ Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Valve for Controlling Clutch Operating Angle (N373): Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Control Module Defective \/ Internal Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve fault\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lamps illuminated on dashboard\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or AWD not working at all\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eDisconnect battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect connectors for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eFit the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and check AWD module communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out any required coding or adaptation if your vehicle requests it\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003eCheck the pump and connector condition before final installation\u003c\/li\u003e\n \u003cli\u003eInspect the pre-charge pump and wiring\u003c\/li\u003e\n \u003cli\u003eCheck for stored ABS \/ AWD communication faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"fa93949c95ba999b8889d79f998fd4999597\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eIf you have any questions about compatibility, diagnostics, or installation, contact us and we will help you choose the correct Haldex solution for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eThe photos are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact us directly\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking the N373 valve is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51006336270669,"sku":"","price":389.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945.jpg?v=1745838610"},{"product_id":"haldex-control-unit-volvo-5wp33518-01","title":"5WP33518-01 Haldex control unit Volvo Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 5WP33518-01 Haldex control unit for Volvo AWD. Original Siemens DEM module for XC70, XC90, S60, V70 and XC60 with online coding support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33518-01, 5WP3351801, 5WP33518-03, 5WP33518, Haldex control unit, Volvo AWD, Gen 4 Haldex, Siemens, HAP542, 110684-01, XC70, XC90, XC60, S60, V70, DEM module\"\u003e\n \u003ctitle\u003e5WP33518-01 Haldex Control Unit Volvo AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed OEM Haldex Control Unit 5WP33518-01 – Volvo AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33518-01\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential electronic module for Volvo AWD vehicles with Gen 4 Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33518\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSiemens Reference\u003c\/strong\u003e\n 110684-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Used original Haldex control unit, cleaned and tested before dispatch. Designed to restore rear axle engagement and proper AWD operation in compatible Volvo vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP33518-01  •  5WP3351801  •  5WP33518  •  5WP33518-03\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP542  •  Siemens 110684-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number on your current Haldex \/ DEM module with the references listed above. If you are unsure, contact us and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Electronic Module (DEM \/ AWD ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33518\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSiemens Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e110684-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolvo AWD vehicles with Haldex coupling\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eOnline support in case coding is required\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a used original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33518-01\u003c\/strong\u003e, designed for Volvo AWD systems using the fourth-generation Haldex coupling. The module functions as the electronic management unit of the rear differential system and controls torque transfer to the rear axle when traction is needed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling to engage rear-wheel drive when required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and drivetrain systems\u003c\/li\u003e\n \u003cli\u003eMonitors AWD operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eManages hydraulic clutch pressure strategy in the rear coupling\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD operation when the original ECU has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need assistance, contact us and we will help with the next steps.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eCommon Volvo applications for this Haldex control unit include the models below. Always confirm the part number on your current module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolvo XC70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC90 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo S60 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo V70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC60 AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing part label and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Faults \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can cause the AWD system to stop working or operate intermittently. Common symptoms and diagnostic issues include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve \/ clutch pressure valve fault\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive \/ AWD not working at all\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eIntermittent AWD engagement or stored communication faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInspect the Haldex control valve if related faults are stored\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eCheck for remaining AWD, ESP or ABS faults after fitting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If you need help with coding, diagnostics or compatibility, reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"a2cbccc4cde2c1c3d0d18fc7c1d78cc1cdcf\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater ingress, condensation or connector corrosion can interrupt communication and damage the internal electronics of the DEM module.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Hydraulic System Faults\u003c\/h3\u003e\n \u003cp\u003eRelated Haldex valve or hydraulic pressure issues can overload the control unit and trigger repeated AWD or actuator-related faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and thermal cycling can cause internal circuit or memory problems, leading to intermittent AWD operation or complete loss of rear drive control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, weak power supply or poor connector contact can create no-communication errors and unstable module behaviour.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003eWarranty Included:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a functionality warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or hydraulic system faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you want help with compatibility, installation or coding support, contact us and we will assist you.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the part number on your current DEM \/ Haldex control unit before placing an order\u003c\/li\u003e\n \u003cli\u003eThis is a used original OEM module, cleaned and tested before dispatch\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only and the supplied unit may differ slightly in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eCoding may be required after installation and online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51201097466189,"sku":"","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0cq907554j","title":"0CQ907554J Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0CQ907554J Haldex Control Unit 5th Gen. Tested \u0026amp; functional, 12-month warranty. BorgWarner original. Fits VW, Audi, Skoda and SEAT AWD vehicles.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0CQ907554J, Haldex control unit, 5th generation Haldex, AWD control unit, rear differential module, BorgWarner, VW Golf, Tiguan, Audi A3, Q3, TT\"\u003e\n \u003ctitle\u003e0CQ907554J Haldex Control Unit 5th Gen AWD | Used Original | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n\n body {\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n line-height: 1.6;\n color: #ffffff;\n background-color: #000000;\n }\n\n .container {\n max-width: 1200px;\n margin: 0 auto;\n padding: 20px;\n background-color: #000000;\n }\n\n .product-header {\n background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);\n color: white;\n padding: 30px;\n border-radius: 8px;\n margin-bottom: 30px;\n border: 2px solid #E3FC02;\n }\n\n .product-header h1 {\n font-size: 2em;\n margin-bottom: 10px;\n font-weight: 600;\n color: #ffffff;\n }\n\n .product-header .part-number {\n font-size: 1.3em;\n font-weight: bold;\n background-color: #E3FC02;\n color: #000000;\n display: inline-block;\n padding: 8px 15px;\n border-radius: 5px;\n margin-top: 10px;\n }\n\n .info-section {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2);\n border: 1px solid #E3FC02;\n color: #ffffff;\n }\n\n .info-section h2 {\n color: #E3FC02;\n font-size: 1.4em;\n margin-bottom: 15px;\n padding-bottom: 10px;\n border-bottom: 2px solid #E3FC02;\n }\n\n .info-section h3 {\n color: #E3FC02;\n font-size: 1.1em;\n margin-top: 20px;\n margin-bottom: 10px;\n }\n\n .info-section p {\n color: #ffffff;\n }\n\n .info-section ul {\n color: #ffffff;\n }\n\n .info-section li {\n color: #ffffff;\n }\n\n .key-features {\n display: grid;\n grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));\n gap: 15px;\n margin-bottom: 20px;\n }\n\n .feature-box {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n color: #ffffff;\n }\n\n .feature-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 5px;\n }\n\n .oem-numbers {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n margin-bottom: 20px;\n }\n\n .oem-numbers strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n font-size: 1.1em;\n }\n\n .oem-numbers p {\n font-family: 'Courier New', monospace;\n font-size: 0.95em;\n line-height: 1.8;\n color: #ffffff;\n }\n\n .compatibility-list {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n }\n\n .compatibility-list ul {\n list-style: none;\n padding: 0;\n }\n\n .compatibility-list li {\n padding: 10px;\n margin-bottom: 8px;\n background-color: #2a2a2a;\n border-radius: 5px;\n border-left: 3px solid #E3FC02;\n color: #ffffff;\n }\n\n .compatibility-list li:before {\n content: \"✓ \";\n color: #E3FC02;\n font-weight: bold;\n margin-right: 8px;\n }\n\n .warning-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .warning-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .info-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .info-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .success-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .success-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .technical-specs {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-top: 15px;\n }\n\n .spec-row {\n display: contents;\n }\n\n .spec-label {\n background-color: #2a2a2a;\n padding: 10px;\n font-weight: 600;\n color: #E3FC02;\n border-radius: 3px;\n }\n\n .spec-value {\n background-color: #1a1a1a;\n padding: 10px;\n border-radius: 3px;\n color: #ffffff;\n }\n\n @media (max-width: 768px) {\n .technical-specs {\n grid-template-columns: 1fr;\n }\n\n .spec-label {\n border-bottom: none;\n border-radius: 3px 3px 0 0;\n }\n\n .spec-value {\n border-radius: 0 0 3px 3px;\n margin-bottom: 10px;\n }\n }\n\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n\n @media (max-width: 768px) {\n .btn-contact {\n width: 100%;\n max-width: 300px;\n }\n }\n\n .fault-codes {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n margin-top: 15px;\n }\n\n .fault-codes ul {\n list-style: none;\n padding: 0;\n column-count: 2;\n column-gap: 20px;\n }\n\n .fault-codes li {\n padding: 5px 0;\n font-size: 0.9em;\n color: #ffffff;\n break-inside: avoid;\n }\n\n .fault-codes code {\n color: #E3FC02;\n background-color: #1a1a1a;\n padding: 2px 6px;\n border-radius: 3px;\n font-weight: 600;\n }\n\n @media (max-width: 768px) {\n .fault-codes ul {\n column-count: 1;\n }\n }\n\n footer {\n text-align: center;\n padding: 20px;\n color: #b0b0b0;\n font-size: 0.9em;\n margin-top: 30px;\n border-top: 1px solid #E3FC02;\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003c!-- Product Header --\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0CQ907554J – 5th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0CQ907554J\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal BorgWarner – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- Key Features --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used - Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control unit undergoes individual functional testing prior to dispatch. This unit is fully operational and prepared for direct installation into compatible AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- OEM Part Numbers --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCompatible OEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554J  •  2007074  •  09BBS0TUE  •  0CQ 907 554 J\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554H\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU\/RDCM)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H52\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 7084\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Product Description --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original BorgWarner Haldex 5th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554J\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system, responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eContinuously monitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eOperates the hydraulic pump to generate and regulate clutch pack pressure\u003c\/li\u003e\n \u003cli\u003eEngages rear-wheel drive distribution automatically when required\u003c\/li\u003e\n \u003cli\u003eExchanges data with ABS, ESP and engine management control modules\u003c\/li\u003e\n \u003cli\u003eStores and applies learned pump calibration values for accurate pressure control\u003c\/li\u003e\n \u003cli\u003eProtects the coupling from thermal overload via temperature monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003eThe \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554J\u003c\/strong\u003e with hardware HW H52 and software SW 7084 is used across a wide range of VAG group vehicles. Always verify the part number on your existing unit before ordering.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n Following installation, the control unit requires coding to the vehicle using VCDS, ODIS, or compatible VAG diagnostic equipment. A \u003cstrong\u003ePump Learn function\u003c\/strong\u003e (Basic Settings, module 22) must be carried out with the engine running to correctly calibrate pump pressure values. Skipping this step may prevent the AWD system from engaging even with a fully functional unit.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Vehicle Compatibility --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0CQ907554J is compatible with VAG group vehicles equipped with Haldex 5th generation AWD systems. Typical applications include the models below. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion \/ Golf VII AWD\u003c\/li\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003cli\u003eTransporter 4Motion\u003c\/li\u003e\n \u003cli\u003eCaddy 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA1 Quattro\u003c\/li\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003cli\u003eQ2 Quattro\u003c\/li\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eKodiaq 4x4\u003c\/li\u003e\n \u003cli\u003eKaroq 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLeon 4Drive\u003c\/li\u003e\n \u003cli\u003eAteca 4Drive\u003c\/li\u003e\n \u003cli\u003eArona 4Drive\u003c\/li\u003e\n \u003cli\u003eTarraco 4Drive\u003c\/li\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Common Fault Codes --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex control unit commonly triggers one or more of the following fault codes. If your vehicle displays any of these, the control unit may require replacement:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114 00) – AWD Clutch Control Unit: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eB2000 98\u003c\/code\u003e (17460) – Control Unit Defective: Clutch Temperature Sensor\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16670\u003c\/code\u003e – All-Wheel Drive: C1113 07 – Mechanical Failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16671\u003c\/code\u003e – Haldex Clutch Pump: C1112 04 – Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16668\u003c\/code\u003e – Haldex Pump: C1112 07 – Mechanical Failure Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16666\u003c\/code\u003e – Haldex Pump: C1112 13 – Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16664\u003c\/code\u003e – Haldex Pump: C1112 11 – Short to Ground\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111307\u003c\/code\u003e – Mechanical Malfunction – Passive \/ Sporadic\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111204\u003c\/code\u003e – Haldex Clutch Pump: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e052C\u003c\/code\u003e – AWD Control Unit: Blocked \/ No Signal\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers and mobile apps typically cannot communicate with the Haldex AWD controller at module address 22. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Installation --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eRun Pump Learn function via module 22 Basic Settings (engine must be running)\u003c\/li\u003e\n \u003cli\u003eCarry out a short test drive and confirm AWD engagement using the diagnostic tool\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003ePump Learn – Mandatory After Installation\u003c\/h3\u003e\n \u003cp\u003eThe Pump Learn calibration procedure is required every time a Haldex control unit is replaced or reinstalled. Without completing this step, the unit will not deliver sufficient power to the pump motor, which prevents AWD engagement. Navigate to module 22 AWD in VCDS or ODIS → Basic Settings → select Pump Motor calibration. The procedure takes approximately 1 minute and must be performed with the engine running.\u003c\/p\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need guidance with the Pump Learn procedure after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"a2cbccc4cde2c1c3d0d18fc7c1d78cc1cdcf\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eClean the pump gauze strainer with compressed air or brake cleaner\u003c\/li\u003e\n \u003cli\u003eInspect the 6-pin wiring connector located under the rear seat access panel\u003c\/li\u003e\n \u003cli\u003eCheck both 12V supply fuses dedicated to the Haldex AWD system\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- Why Haldex Units Fail --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 5 Haldex system relies on two independent 12V supply lines, each protected by a separate fuse. Blown fuses, corroded pins, or damaged wiring at the rear connector block are a common cause of total AWD loss, often without any obvious warning light on the dashboard.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving, repeated AWD engagement, or engine remapping can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog the pump gauze and internal hydraulic passages. This accelerates wear on the pump and can cause inaccurate control unit readings, leading to incorrect pump calibration and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eClean the pump gauze strainer at each oil service\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eAvoid repeated aggressive AWD launches, especially on remapped vehicles\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Quality \u0026 Warranty --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003ePump control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, failure to perform the mandatory Pump Learn calibration, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid protects the replacement control unit and ensures accurate pump calibration. Use only approved Haldex Gen 5 fluid. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Contact --\u003e\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, coding support, and Pump Learn assistance.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003c!-- Important Notes --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":51201182007629,"sku":"","price":299.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/photo_2025-03-07_08-47-43.jpg?v=1741333674"},{"product_id":"haldex-control-unit-land-rover-5wp33519-04","title":"5WP33519-04 Haldex control unit Land Rover Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used OEM 5WP33519-04 Haldex control unit for Land Rover AWD Gen 4. Original Continental module for Freelander 2, LR2 and Range Rover Evoque with online technical support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33519-04, 5WP3351904, Haldex control unit, Land Rover Haldex ECU, HAP542, 113679-01, AWD Gen 4, Continental, Freelander 2, LR2, Range Rover Evoque\"\u003e\n \u003ctitle\u003e5WP33519-04 Haldex Control Unit Gen 4 | Used OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; 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margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 5WP33519-04\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33519-04\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 4 Haldex AWD control module for Land Rover vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 113679-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eOEM Reference\u003c\/strong\u003e\n 5WP33519-04 \/ 5WP3351904\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n This control unit has been function-tested before dispatch and is supplied as a fully operational OEM replacement part for compatible Land Rover AWD applications.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP33519-04  •  5WP3351904  •  5WP33519  •  5WP33519-03  •  5WP33519-02  •  5WP33519-01  •  HAP542  •  113679-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, compare the part number on your original Haldex control unit with the references above. If you are unsure, contact us and we will help confirm compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eLand Rover AWD vehicles\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 113679-01\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eOnline Technical Support Included\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Continental Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33519-04\u003c\/strong\u003e, designed for 4th generation AWD systems used in selected Land Rover vehicles. The module controls the rear differential coupling and manages torque transfer to the rear axle when traction support is required.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear differential clutch engagement in the Gen 4 Haldex system\u003c\/li\u003e\n \u003cli\u003eSupports torque transfer to the rear axle when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with AWD and related drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD operation when the original module has failed\u003c\/li\u003e\n \u003cli\u003eProvides an OEM replacement solution for communication and rear-drive faults\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDirect OEM Replacement\u003c\/strong\u003e\n This module is intended as an OEM replacement for the original control unit. Some vehicles may require coding, configuration, or adaptation after installation, and online support is available if assistance is needed during setup.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex control unit is commonly fitted to selected Land Rover AWD vehicles. Always match the original part number before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eLand Rover\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLand Rover Freelander 2\u003c\/li\u003e\n \u003cli\u003eLand Rover LR2\u003c\/li\u003e\n \u003cli\u003eRange Rover Evoque\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing module label and we will help verify whether this control unit is suitable for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA defective Haldex control unit may cause one or more of the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003eNo rear-wheel drive engagement or no AWD assistance\u003c\/li\u003e\n \u003cli\u003eLoss of traction from the rear axle\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e Haldex \/ AWD module not detected by diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e Haldex valve related fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e Warning lights on the dashboard linked to AWD malfunction\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eAWD Inactive\u003c\/code\u003e Rear axle does not engage under load\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eTraction Loss\u003c\/code\u003e Vehicle behaves like front-wheel drive only\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eIntermittent Fault\u003c\/code\u003e AWD operation works only occasionally\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n Always check the Haldex control unit and related wiring before replacing other AWD components. Communication faults and rear-drive loss are often caused directly by a failed module.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex ECU on the rear differential assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and unplug the electrical connector\u003c\/li\u003e\n \u003cli\u003eRemove the mounting bolts and detach the old control unit\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module and reconnect all connectors securely\u003c\/li\u003e\n \u003cli\u003eCheck the AWD system with a suitable diagnostic tool after installation\u003c\/li\u003e\n \u003cli\u003eComplete coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and road test the vehicle\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If you need assistance with installation or coding, our technical team can help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f891969e97b89b998a8bd59d9b8dd69b9795\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eMoisture and road contamination can damage the connector area and internal electronics, leading to unstable AWD communication or complete module failure.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eProblems with the Haldex pump or valve can overload the system and trigger recurring faults that may affect rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eInternal circuit wear and electronic component failure can cause intermittent communication problems, loss of AWD function or inactive rear drive.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Connector Damage\u003c\/h3\u003e\n \u003cp\u003eDamaged pins, poor terminal contact or harness faults can interrupt module operation and create misleading drivetrain or traction-related errors.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to controller operation under normal use\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, pump or valve faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"\/cdn-cgi\/l\/email-protection#2d44434b426d4e4c5f5e00484e58034e4240\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eIf your country is not listed at checkout, contact us and the order can be processed manually\u003c\/li\u003e\n \u003cli\u003eUsed original OEM part supplied tested and functional\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated BMW-style layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":51205799477581,"sku":"","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-volvo-5wp22229-01","title":"5wp22229-01 Haldex control unit Volvo Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 5WP22229-01 Haldex control unit for Volvo AWD Gen 2. Original Siemens DEM module for V70, XC70, XC90, S60 and S80 with tested operation and online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP22229-01, 5WP22229, 5WP2222901, Haldex control unit, Volvo AWD, Gen 2 Haldex, Siemens, HAP511, 105383-01, XC90, XC70, V70, S60, S80, DEM module\"\u003e\n \u003ctitle\u003e5WP22229-01 Haldex Control Unit Volvo AWD Gen 2 | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed OEM Haldex Control Unit 5WP22229-01 – Volvo AWD Gen 2\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP22229-01\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential electronic module for Volvo AWD vehicles with 2nd-generation Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511 \/ 5WP22229\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSiemens Reference\u003c\/strong\u003e\n 105383-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Used original Haldex control unit, tested before dispatch. Designed to restore rear axle engagement and proper AWD operation in compatible Volvo vehicles with second-generation Haldex systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e5WP22229-01  •  5WP22229  •  5WP2222901\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP511  •  Siemens 105383-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number on your current Haldex \/ DEM module with the references listed above. If you are unsure, contact us and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Electronic Module (DEM \/ AWD ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511 \/ 5WP22229\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSiemens Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e105383-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolvo AWD vehicles with Haldex Gen 2 coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOnline support in case coding is required\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a used original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP22229-01\u003c\/strong\u003e, designed for second-generation Volvo AWD systems. The module functions as the electronic management unit of the rear differential system and controls torque transfer to the rear axle when traction is needed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling to engage rear-wheel drive when required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and drivetrain systems\u003c\/li\u003e\n \u003cli\u003eMonitors AWD operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eManages hydraulic clutch pressure strategy in the rear coupling\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD operation when the original ECU has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need assistance, contact us and we will help with the next steps.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eCommon Volvo applications for this Haldex control unit include the models below. Always confirm the part number on your current module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolvo V70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC90 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo S60 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo S80 AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing part label and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Faults \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can cause the AWD system to stop working or operate intermittently. Common symptoms and diagnostic issues include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve \/ clutch pressure valve fault\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive \/ AWD not working at all\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eIntermittent AWD engagement or stored communication faults\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e094\u003c\/code\u003e – Communication between control modules\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInspect the Haldex control valve if faulty\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eCheck for remaining AWD, ESP or ABS faults after fitting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"2c45424a436c4f4d5e5f01494f59024f4341\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater ingress, condensation or connector corrosion can interrupt communication and damage the internal electronics of the DEM module.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Hydraulic System Faults\u003c\/h3\u003e\n \u003cp\u003eRelated Haldex valve or hydraulic pressure issues can overload the control unit and trigger repeated AWD or actuator-related faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and thermal cycling can cause internal circuit or memory problems, leading to intermittent AWD operation or complete loss of rear drive control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, weak power supply or poor connector contact can create no-communication errors and unstable module behaviour.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or hydraulic system faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics, or installation, contact us and we will help you choose the correct Haldex solution for your Volvo.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact us directly\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil during installation is recommended\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51205850399053,"sku":"","price":319.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-volvo-5wp33502-01","title":"5WP33502-01 Haldex control unit Volvo Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 5WP33502-01 Haldex control unit for Volvo AWD. Original Siemens DEM module for V70, XC70 and XC90 with online support and tested operation.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33502-01, 5WP33502, 5WP 33502-01, Haldex control unit, Volvo AWD, Gen 3 Haldex, Siemens, HAP542, 109204-01, 36001751, 30783061, 30713163, 30759702, XC90, XC70, V70, DEM module\"\u003e\n \u003ctitle\u003e5WP33502-01 Haldex Control Unit Volvo AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed OEM Haldex Control Unit 5WP33502-01 – Volvo AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33502-01\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Siemens rear differential electronic module for Volvo AWD vehicles with Gen 3 Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 3rd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33502\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSiemens Reference\u003c\/strong\u003e\n 109204-01\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Used original Haldex control unit, cleaned and tested before dispatch. Designed to restore rear axle engagement and proper AWD operation in compatible Volvo vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e5WP33502-01  •  5WP33502  •  5WP 33502-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHAP542  •  Siemens 109204-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eAssociated Volvo DEM Numbers:\u003c\/strong\u003e\n \u003cp\u003e36001751  •  30783061  •  30713163  •  30759702\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number on your current Haldex \/ DEM module with the references listed above. If you are unsure, contact us and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 3rd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Electronic Module (DEM \/ AWD ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33502\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSiemens Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e109204-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolvo AWD vehicles with Haldex coupling\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Fully Tested \u0026amp; Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOnline support in case coding is required\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a used original Siemens Haldex control unit with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33502-01\u003c\/strong\u003e, designed for Volvo AWD systems using the Haldex coupling. The module functions as the electronic management unit of the rear differential system and controls torque transfer to the rear axle when traction is needed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling to engage rear-wheel drive when required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and drivetrain systems\u003c\/li\u003e\n \u003cli\u003eMonitors AWD operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eManages hydraulic clutch pressure strategy in the rear coupling\u003c\/li\u003e\n \u003cli\u003eHelps restore proper AWD operation when the original ECU has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is included in case the module needs to be coded after installation. If you need assistance, contact us and we will help with the next steps.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eCommon Volvo applications for this Haldex control unit include the models below. Always confirm the part number on your current module before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolvo V70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC70 AWD\u003c\/li\u003e\n \u003cli\u003eVolvo XC90 AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing part label and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Faults \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can cause the AWD system to stop working or operate intermittently. Common symptoms and diagnostic issues include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD control module not responding\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex control valve \/ clutch pressure valve fault\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive \/ AWD not working at all\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eIntermittent AWD engagement or stored communication faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect the connector for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and check communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required by the vehicle after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace or inspect the Haldex control valve if faulty\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eCheck for remaining AWD, ESP or ABS faults after fitting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need advice after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"dcb5b2bab39cbfbdaeaff1b9bfa9f2bfb3b1\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater ingress, condensation or connector corrosion can interrupt communication and damage the internal electronics of the DEM module.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Hydraulic System Faults\u003c\/h3\u003e\n \u003cp\u003eRelated Haldex valve or hydraulic pressure issues can overload the control unit and trigger repeated AWD or actuator-related faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and thermal cycling can cause internal circuit or memory problems, leading to intermittent AWD operation or complete loss of rear drive control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, weak power supply or poor connector contact can create no-communication errors and unstable module behaviour.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or hydraulic system faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you have any questions about compatibility, diagnostics, or installation, contact us and we will help you choose the correct Haldex solution for your Volvo.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact us directly\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil during installation is recommended\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n © 2026 Cars-ECU. Product page prepared in the updated layout.\n \u003c\/footer\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51205949620557,"sku":"","price":319.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-1k0907554b","title":"1K0907554B Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"1K0907554B Haldex Control Unit Gen 2 AWD – refurbished Siemens OEM for VW Passat, Audi A3, Skoda Octavia and selected SEAT models. Fully tested, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"1K0907554B, 1K0907554A, 1K0907554, Haldex control unit, Gen 2 Haldex, HAP511, 5WP2222-02, Siemens Haldex ECU, AWD control module, VW Passat Haldex, Audi A3 quattro Haldex, Skoda Octavia 4x4\"\u003e\n \u003ctitle\u003e1K0907554B Haldex Control Unit Gen 2 AWD | Refurbished OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 1K0907554B\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 1K0907554B\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOEM original rear differential \/ Gen 2 Haldex AWD control module for Volkswagen Group vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP511 \/ 5WP2222-02\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0107 \/ HW H05\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each module is professionally refurbished, tested and verified as a reliable OEM replacement for a faulty original Haldex controller in Gen 2 AWD systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554B  •  1K0 907 554 B  •  HAP511  •  5WP2222-02  •  SW 0107  •  HW H05\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e1K0907554  •  1K0907554A  •  1K0907554B\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511 \/ 5WP2222-02\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0107\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolkswagen Group AWD vehicles with Gen 2 Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished \/ Fully Tested\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex control unit with OEM number \u003cstrong style=\"color:#E3FC02;\"\u003e1K0907554B\u003c\/strong\u003e, developed for second-generation Haldex AWD systems used in Volkswagen Group vehicles. The module controls rear axle engagement, manages clutch pressure strategy and communicates with ABS \/ ESP and drivetrain systems.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and drivetrain modules\u003c\/li\u003e\n \u003cli\u003eMonitors system operation and stores diagnostic trouble codes\u003c\/li\u003e\n \u003cli\u003eControls pre-charge pump activation and clutch pressure strategy\u003c\/li\u003e\n \u003cli\u003eHelps restore stable AWD function in low-traction conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n Coding support is available if required after installation. If you need guidance with diagnostics or setup, contact us and we will help you choose the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eTypical applications for this Gen 2 Haldex control unit include the following vehicles. Always confirm the part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion \/ R32\u003c\/li\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSelected AWD models with Gen 2 Haldex\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit can trigger fault codes, communication problems and complete loss of rear-wheel engagement. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – Internal Controller Fault\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eRear-wheel drive not engaging or intermittent AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and access the rear differential Haldex module safely\u003c\/li\u003e\n \u003cli\u003eRemove the old control unit and inspect connectors for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear fault codes and confirm AWD communication with a diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if requested by the vehicle\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eInspect the pre-charge pump and related wiring\u003c\/li\u003e\n \u003cli\u003eRenew Haldex oil \/ service fluid\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"aac3c4ccc5eac9cbd8d987cfc9df84c9c5c7\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture, worn seals and housing contamination can affect the control unit electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or pump can overload the AWD system and trigger recurring module-related diagnostic errors, communication faults or loss of rear axle engagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil and checking valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51586469822797,"sku":null,"price":389.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0cq907554d","title":"0CQ907554D Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0CQ907554D Haldex Control Unit 5th Gen. Tested \u0026amp; functional, 12-month warranty. BorgWarner original. Fits VW, Audi, Skoda and SEAT AWD vehicles.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0CQ907554D, Haldex control unit, 5th generation Haldex, AWD control unit, rear differential module, BorgWarner, VW Golf, Tiguan, Audi A3, Q3, TT\"\u003e\n \u003ctitle\u003e0CQ907554D Haldex Control Unit 5th Gen AWD | Used Original | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n\n body {\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n line-height: 1.6;\n color: #ffffff;\n background-color: #000000;\n }\n\n .container {\n max-width: 1200px;\n margin: 0 auto;\n padding: 20px;\n background-color: #000000;\n }\n\n .product-header {\n background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);\n color: white;\n padding: 30px;\n border-radius: 8px;\n margin-bottom: 30px;\n border: 2px solid #E3FC02;\n }\n\n .product-header h1 {\n font-size: 2em;\n margin-bottom: 10px;\n font-weight: 600;\n color: #ffffff;\n }\n\n .product-header .part-number {\n font-size: 1.3em;\n font-weight: bold;\n background-color: #E3FC02;\n color: #000000;\n display: inline-block;\n padding: 8px 15px;\n border-radius: 5px;\n margin-top: 10px;\n }\n\n .info-section {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2);\n border: 1px solid #E3FC02;\n color: #ffffff;\n }\n\n .info-section h2 {\n color: #E3FC02;\n font-size: 1.4em;\n margin-bottom: 15px;\n padding-bottom: 10px;\n border-bottom: 2px solid #E3FC02;\n }\n\n .info-section h3 {\n color: #E3FC02;\n font-size: 1.1em;\n margin-top: 20px;\n margin-bottom: 10px;\n }\n\n .info-section p {\n color: #ffffff;\n }\n\n .info-section ul {\n color: #ffffff;\n }\n\n .info-section li {\n color: #ffffff;\n }\n\n .key-features {\n display: grid;\n grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));\n gap: 15px;\n margin-bottom: 20px;\n }\n\n .feature-box {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n color: #ffffff;\n }\n\n .feature-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 5px;\n }\n\n .oem-numbers {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n margin-bottom: 20px;\n }\n\n .oem-numbers strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n font-size: 1.1em;\n }\n\n .oem-numbers p {\n font-family: 'Courier New', monospace;\n font-size: 0.95em;\n line-height: 1.8;\n color: #ffffff;\n }\n\n .compatibility-list {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n }\n\n .compatibility-list ul {\n list-style: none;\n padding: 0;\n }\n\n .compatibility-list li {\n padding: 10px;\n margin-bottom: 8px;\n background-color: #2a2a2a;\n border-radius: 5px;\n border-left: 3px solid #E3FC02;\n color: #ffffff;\n }\n\n .compatibility-list li:before {\n content: \"✓ \";\n color: #E3FC02;\n font-weight: bold;\n margin-right: 8px;\n }\n\n .warning-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .warning-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .info-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .info-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .success-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .success-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .technical-specs {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-top: 15px;\n }\n\n .spec-row {\n display: contents;\n }\n\n .spec-label {\n background-color: #2a2a2a;\n padding: 10px;\n font-weight: 600;\n color: #E3FC02;\n border-radius: 3px;\n }\n\n .spec-value {\n background-color: #1a1a1a;\n padding: 10px;\n border-radius: 3px;\n color: #ffffff;\n }\n\n @media (max-width: 768px) {\n .technical-specs {\n grid-template-columns: 1fr;\n }\n\n .spec-label {\n border-bottom: none;\n border-radius: 3px 3px 0 0;\n }\n\n .spec-value {\n border-radius: 0 0 3px 3px;\n margin-bottom: 10px;\n }\n }\n\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n\n @media (max-width: 768px) {\n .btn-contact {\n width: 100%;\n max-width: 300px;\n }\n }\n\n .fault-codes {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n margin-top: 15px;\n }\n\n .fault-codes ul {\n list-style: none;\n padding: 0;\n column-count: 2;\n column-gap: 20px;\n }\n\n .fault-codes li {\n padding: 5px 0;\n font-size: 0.9em;\n color: #ffffff;\n break-inside: avoid;\n }\n\n .fault-codes code {\n color: #E3FC02;\n background-color: #1a1a1a;\n padding: 2px 6px;\n border-radius: 3px;\n font-weight: 600;\n }\n\n @media (max-width: 768px) {\n .fault-codes ul {\n column-count: 1;\n }\n }\n\n footer {\n text-align: center;\n padding: 20px;\n color: #b0b0b0;\n font-size: 0.9em;\n margin-top: 30px;\n border-top: 1px solid #E3FC02;\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003c!-- Product Header --\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0CQ907554D – 5th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0CQ907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal BorgWarner – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- Key Features --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used - Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control unit undergoes individual functional testing prior to dispatch. This unit is fully operational and prepared for direct installation into compatible AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- OEM Part Numbers --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCompatible OEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554D  •  200360  •  09AOB3H7V  •  0CQ 907 554 D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU\/RDCM)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H52\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 7081\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Product Description --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original BorgWarner Haldex 5th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554D\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system, responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eContinuously monitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eOperates the hydraulic pump to generate and regulate clutch pack pressure\u003c\/li\u003e\n \u003cli\u003eEngages rear-wheel drive distribution automatically when required\u003c\/li\u003e\n \u003cli\u003eExchanges data with ABS, ESP and engine management control modules\u003c\/li\u003e\n \u003cli\u003eStores and applies learned pump calibration values for accurate pressure control\u003c\/li\u003e\n \u003cli\u003eProtects the coupling from thermal overload via temperature monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003eThe \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554D\u003c\/strong\u003e with hardware HW H52 and software SW 7081 is used across a wide range of VAG group vehicles. Always verify the part number on your existing unit before ordering.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n Following installation, the control unit requires coding to the vehicle using VCDS, ODIS, or compatible VAG diagnostic equipment. A \u003cstrong\u003ePump Learn function\u003c\/strong\u003e (Basic Settings, module 22) must be carried out with the engine running to correctly calibrate pump pressure values. Skipping this step may prevent the AWD system from engaging even with a fully functional unit.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Vehicle Compatibility --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0CQ907554D is compatible with VAG group vehicles equipped with Haldex 5th generation AWD systems. Typical applications include the models below. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion \/ Golf VII AWD\u003c\/li\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003cli\u003eTransporter 4Motion\u003c\/li\u003e\n \u003cli\u003eCaddy 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA1 Quattro\u003c\/li\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003cli\u003eQ2 Quattro\u003c\/li\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eKodiaq 4x4\u003c\/li\u003e\n \u003cli\u003eKaroq 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLeon 4Drive\u003c\/li\u003e\n \u003cli\u003eAteca 4Drive\u003c\/li\u003e\n \u003cli\u003eArona 4Drive\u003c\/li\u003e\n \u003cli\u003eTarraco 4Drive\u003c\/li\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Common Fault Codes --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex control unit commonly triggers one or more of the following fault codes. If your vehicle displays any of these, the control unit may require replacement:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114 00) – AWD Clutch Control Unit: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eB2000 98\u003c\/code\u003e (17460) – Control Unit Defective: Clutch Temperature Sensor\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16670\u003c\/code\u003e – All-Wheel Drive: C1113 07 – Mechanical Failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16671\u003c\/code\u003e – Haldex Clutch Pump: C1112 04 – Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16668\u003c\/code\u003e – Haldex Pump: C1112 07 – Mechanical Failure Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16666\u003c\/code\u003e – Haldex Pump: C1112 13 – Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16664\u003c\/code\u003e – Haldex Pump: C1112 11 – Short to Ground\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111307\u003c\/code\u003e – Mechanical Malfunction – Passive \/ Sporadic\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111204\u003c\/code\u003e – Haldex Clutch Pump: Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e052C\u003c\/code\u003e – AWD Control Unit: Blocked \/ No Signal\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers and mobile apps typically cannot communicate with the Haldex AWD controller at module address 22. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Installation --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eRun Pump Learn function via module 22 Basic Settings (engine must be running)\u003c\/li\u003e\n \u003cli\u003eCarry out a short test drive and confirm AWD engagement using the diagnostic tool\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003ePump Learn – Mandatory After Installation\u003c\/h3\u003e\n \u003cp\u003eThe Pump Learn calibration procedure is required every time a Haldex control unit is replaced or reinstalled. Without completing this step, the unit will not deliver sufficient power to the pump motor, which prevents AWD engagement. Navigate to module 22 AWD in VCDS or ODIS → Basic Settings → select Pump Motor calibration. The procedure takes approximately 1 minute and must be performed with the engine running.\u003c\/p\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance or you need guidance with the Pump Learn procedure after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"a2cbccc4cde2c1c3d0d18fc7c1d78cc1cdcf\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eClean the pump gauze strainer with compressed air or brake cleaner\u003c\/li\u003e\n \u003cli\u003eInspect the 6-pin wiring connector located under the rear seat access panel\u003c\/li\u003e\n \u003cli\u003eCheck both 12V supply fuses dedicated to the Haldex AWD system\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- Why Haldex Units Fail --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 5 Haldex system relies on two independent 12V supply lines, each protected by a separate fuse. Blown fuses, corroded pins, or damaged wiring at the rear connector block are a common cause of total AWD loss, often without any obvious warning light on the dashboard.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving, repeated AWD engagement, or engine remapping can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog the pump gauze and internal hydraulic passages. This accelerates wear on the pump and can cause inaccurate control unit readings, leading to incorrect pump calibration and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eClean the pump gauze strainer at each oil service\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eAvoid repeated aggressive AWD launches, especially on remapped vehicles\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Quality \u0026 Warranty --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003ePump control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, failure to perform the mandatory Pump Learn calibration, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid protects the replacement control unit and ensures accurate pump calibration. Use only approved Haldex Gen 5 fluid. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Contact --\u003e\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, coding support, and Pump Learn assistance.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003c!-- Important Notes --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":51614066770253,"sku":null,"price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/0E873867-D2B2-4CA3-BE9B-6A2D383DEDEA.jpg?v=1746457731"},{"product_id":"haldex-control-unit-t5-with-valves-and-seals-service-kit","title":"Haldex control unit T5 with valves and seals- Service kit","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 7H0907554F Haldex control unit service kit for VW T5 AWD. Gen 2 Siemens ECU with N373 valve, pressure sensor and seal kit, SW 2110 \/ HW H06, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"7H0907554F, 7H0525130F, 5WP22242-01, 5WP2224201, HAP511nm, Haldex T5 service kit, N373 valve, pressure sensor, seal kit, VW Transporter T5, Multivan, Siemens, Gen 2 Haldex\"\u003e\n \u003ctitle\u003e7H0907554F Haldex Control Unit Service Kit | Refurbished VW T5 Gen 2\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit T5 Service Kit 7H0907554F\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 7H0907554F\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eRefurbished Gen 2 Haldex service kit for Volkswagen T5 AWD vehicles, supplied with N373 valve, pressure sensor and sealing components for a more complete repair.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 2nd Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eIncluded in Set\u003c\/strong\u003e\n ECU + N373 Valve + Pressure Sensor + Seal Kit\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSW \/ HW Version\u003c\/strong\u003e\n SW 2110 \/ HW H06\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eComplete Service Kit for VW T5 AWD\u003c\/strong\u003e\n This refurbished service package combines the Haldex control unit with valve and sealing components to help restore stable AWD operation and reduce repeat faults caused by worn valve parts, leaking seals or pressure-related issues.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Reference:\u003c\/strong\u003e\n \u003cp\u003e7H0907554F  •  7H0525130F  •  5WP22242-01  •  5WP2224201  •  HAP511nm\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e7H0907554  •  7H0907554A  •  7H0907554D  •  7H0907554E  •  7H0907554F\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSupplier References:\u003c\/strong\u003e\n \u003cp\u003eSiemens  •  HAP511nm  •  5WP22242-01  •  SW 2110  •  HW H06\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, check the number printed on your original Haldex module and confirm it matches the references listed above. This unit is for the Volkswagen T5 Gen 2 platform and is not a replacement for the 1K0907554 series used on other vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit + N373 Valve + Pressure Sensor + Seal Kit\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP511nm \/ 5WP22242-01\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 2110\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW H06\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVolkswagen Transporter T5 \/ Multivan AWD with Gen 2 Haldex system\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRefurbished \/ Tested \/ Functional Service Kit\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis refurbished Haldex service kit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e7H0907554F\u003c\/strong\u003e is intended for Volkswagen T5 AWD vehicles using a 2nd generation Haldex system. The package includes the control unit together with valve N373, pressure sensor and sealing components, making it a practical solution when the original unit has failed and related service parts should be renewed at the same time.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Set Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eRefurbished Haldex control unit 7H0907554F\u003c\/li\u003e\n \u003cli\u003eValve N373\u003c\/li\u003e\n \u003cli\u003ePressure sensor\u003c\/li\u003e\n \u003cli\u003eControl unit seal \/ sealing kit\u003c\/li\u003e\n \u003cli\u003ePrepared service package for Volkswagen T5 AWD repair work\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eService-Friendly Repair Package\u003c\/strong\u003e\n Supplying the ECU together with key service components helps reduce repeat repairs when valve faults, sealing leaks or pressure-related issues are present alongside control unit failure.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis refurbished service kit is suitable for selected Volkswagen T5-series vehicles equipped with Gen 2 Haldex AWD. Always verify the exact part number on your existing module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Transporter T5 4Motion\u003c\/li\u003e\n \u003cli\u003eVolkswagen Multivan 4Motion\u003c\/li\u003e\n \u003cli\u003eSelected Volkswagen T5 platform vehicles 7H \/ 7J up to 2010 with matching controller\u003c\/li\u003e\n \u003cli\u003eVehicles using 7H0907554 \/ 7H0907554A \/ 7H0907554D \/ 7H0907554E \/ 7H0907554F\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eFitment Note\u003c\/strong\u003e\n Check whether your vehicle has diff lock enabled or a non-diff-lock setup and verify the original module number before ordering. If you are unsure, contact us and we will help confirm compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex ECU or related valve components on Volkswagen T5 AWD vehicles can commonly trigger the following issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control module defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – No communication with AWD \/ differential module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex clutch control valve N373 fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – Module not responding to diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights related to AWD malfunction\u003c\/li\u003e\n \u003cli\u003eRear axle disengagement or loss of 4Motion function\u003c\/li\u003e\n \u003cli\u003eAggressive wheel spin caused by failed Haldex control\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eKnown Failure Cause\u003c\/strong\u003e\n Severe water ingress into the ECU housing is a common reason for internal damage on these Transporter modules, so the connector area and sealing condition should always be checked during replacement.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM number on the original control unit before replacement\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old ECU and inspect the housing, connector and surrounding area for corrosion or water ingress\u003c\/li\u003e\n \u003cli\u003eReplace the N373 valve, pressure sensor and sealing components during the same service procedure\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm module communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a road test and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended During Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInspect the module area for water ingress and damaged seals\u003c\/li\u003e\n \u003cli\u003eCheck Haldex oil condition and service if necessary\u003c\/li\u003e\n \u003cli\u003eInspect pump, wiring and connector pins for damage or corrosion\u003c\/li\u003e\n \u003cli\u003eRun a professional diagnostic check after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module needs coding after installation, our team can help. Contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"9af3f4fcf5daf9fbe8e9b7fff9efb4f9f5f7\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex service kit is tested before dispatch and supplied with a 12-month functionality warranty.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified ECU functionality before shipping\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eOnline support if coding assistance is needed after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Excludes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, water ingress after installation or improper fitting\u003c\/li\u003e\n \u003cli\u003eVehicle-side pump, drivetrain or electrical faults unrelated to the ECU itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you are unsure about compatibility, coding or installation, contact our technical team before ordering. We will help you verify the correct part number for your Volkswagen T5.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact module number printed on your original unit before ordering.\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available. If your country is not shown at checkout, contact us directly.\u003c\/li\u003e\n \u003cli\u003eThis package includes the ECU, N373 valve, pressure sensor and sealing components.\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation and online support is available.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52010599285069,"sku":null,"price":549.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/haldexecuservicekitt5.jpg?v=1751896991"},{"product_id":"haldex-control-unit-0ay907554d","title":"0AY907554D Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"0AY907554D Haldex Control Unit Gen 4 AWD – used Continental OEM for VAG vehicles with 4th generation Haldex. Fully tested, 12-month warranty, online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554D, 0AY598554D, HAP542, 5WP33522-03, 0BR907554, 0BS907554D, Haldex control unit, Gen 4 Haldex, Continental Haldex ECU, AWD control module, Audi VW Skoda Seat Haldex\"\u003e\n \u003ctitle\u003e0AY907554D Haldex Control Unit Gen 4 AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: #ffffff; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 15px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; font-size: 0.92em; color: #ffffff; border-bottom: 1px solid #333333; }\n .fault-codes li:last-child { border-bottom: none; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n min-width: 200px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin-top: 20px;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover {\n background: #E3FC02;\n color: #000000 !important;\n transform: translateY(-1px);\n box-shadow: 0 10px 22px rgba(227, 252, 2, 0.22);\n }\n .btn-contact:hover,\n .btn-contact:focus,\n .btn-contact:active,\n .btn-contact:visited:hover {\n color: #000000 !important;\n }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n .btn-contact { width: 100%; max-width: 300px; }\n }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n white-space: nowrap;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n color: #ffffff;\n text-decoration: none;\n font-size: 28px;\n font-weight: 800;\n letter-spacing: 0.08em;\n white-space: nowrap;\n }\n .site-logo-mark {\n width: 22px;\n height: 22px;\n border: 2px solid #ffffff;\n border-radius: 5px;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 12px;\n line-height: 1;\n }\n .site-nav-caret {\n color: #bdbdbd;\n margin-left: 4px;\n font-size: 11px;\n }\n .site-icon-link {\n font-size: 18px !important;\n line-height: 1;\n }\n @media (max-width: 1080px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 18px 20px;\n gap: 16px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 16px;\n }\n .site-logo {\n order: -1;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n font-size: 11px;\n padding: 0 36px;\n text-align: center;\n }\n .site-nav-left,\n .site-nav-right {\n gap: 12px;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 24px;\n }\n }\n\n \n \/* global-nav-refresh-start *\/\n .site-topbar {\n background: #E3FC02;\n color: #000000;\n font-size: 12px;\n font-weight: 700;\n letter-spacing: 0.08em;\n text-transform: uppercase;\n min-height: 36px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n padding: 0 48px;\n }\n .site-topbar .chevron {\n position: absolute;\n top: 50%;\n transform: translateY(-50%);\n font-size: 16px;\n line-height: 1;\n color: #000000;\n opacity: 0.9;\n }\n .site-topbar .chevron.left { left: 18px; }\n .site-topbar .chevron.right { right: 18px; }\n .site-header {\n background: #111111;\n border-bottom: 1px solid rgba(255,255,255,0.10);\n }\n .site-header-inner {\n max-width: 1380px;\n margin: 0 auto;\n min-height: 78px;\n padding: 0 24px;\n display: grid;\n grid-template-columns: 1fr auto 1fr;\n align-items: center;\n gap: 24px;\n }\n .site-nav-left,\n .site-nav-right {\n display: flex;\n align-items: center;\n gap: 24px;\n }\n .site-nav-right {\n justify-content: flex-end;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n color: #f5f5f5;\n text-decoration: none;\n font-size: 14px;\n font-weight: 500;\n transition: color 0.2s ease;\n }\n .site-nav-link:hover,\n .site-nav-right a:hover {\n color: #E3FC02;\n }\n .site-nav-caret {\n color: #E3FC02;\n margin-left: 4px;\n font-size: 12px;\n }\n .site-logo {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 10px;\n text-decoration: none;\n color: #ffffff;\n font-size: 26px;\n font-weight: 800;\n letter-spacing: 0.08em;\n }\n .site-logo-mark {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n background: #E3FC02;\n color: #000000;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 18px;\n font-weight: 900;\n }\n .site-icon-link {\n width: 34px;\n height: 34px;\n border-radius: 50%;\n border: 1px solid rgba(255,255,255,0.18);\n display: inline-flex;\n align-items: center;\n justify-content: center;\n font-size: 16px;\n }\n .site-footer {\n text-align: center;\n padding: 28px 20px 34px;\n color: #b8b8b8;\n font-size: 0.95em;\n margin-top: 34px;\n border-top: 1px solid #E3FC02;\n }\n .site-footer a {\n color: #E3FC02;\n text-decoration: none;\n }\n .site-footer a:hover {\n text-decoration: underline;\n }\n .footer-links {\n display: flex;\n justify-content: center;\n align-items: center;\n flex-wrap: wrap;\n gap: 10px 16px;\n margin-bottom: 14px;\n font-weight: 600;\n }\n .footer-links .sep {\n color: rgba(227,252,2,0.55);\n }\n .footer-disclaimer,\n .footer-source,\n .footer-copy {\n max-width: 900px;\n margin: 10px auto 0;\n line-height: 1.7;\n }\n .footer-copy {\n color: #8f8f8f;\n font-size: 0.9em;\n }\n @media (max-width: 980px) {\n .site-header-inner {\n grid-template-columns: 1fr;\n padding: 16px 20px;\n gap: 14px;\n }\n .site-nav-left,\n .site-nav-right {\n justify-content: center;\n flex-wrap: wrap;\n gap: 12px 18px;\n }\n .site-logo {\n order: -1;\n font-size: 24px;\n }\n }\n @media (max-width: 640px) {\n .site-topbar {\n padding: 0 36px;\n font-size: 11px;\n text-align: center;\n }\n .site-nav-link,\n .site-nav-right a,\n .site-nav-right span {\n font-size: 13px;\n }\n .site-logo {\n font-size: 22px;\n }\n }\n \/* global-nav-refresh-end *\/\n\n \u003c\/style\u003e\n\n\n\n\u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0AY907554D – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal Continental rear differential control module for VAG 4th generation Haldex AWD vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33522-03\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 0042 \/ HW H43\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Genuine used OEM Haldex controller, fully tested and prepared to restore rear differential control, AWD engagement and stable communication in compatible Gen 4 drivetrain systems.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554D  •  0AY 907 554 D  •  0AY598554D  •  HAP542  •  5WP33522-03  •  SW 0042  •  HW H43\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible ECU Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY907554E  •  0AY598554  •  0AY598554A  •  0AY598554B  •  0AY598554C  •  0AY598554D  •  0BR907554  •  0BR907554A  •  0BR907554B  •  0BR907554C  •  0BS907554  •  0BS907554A  •  0BS907554B  •  0BS907554C  •  0BS907554D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eInterchangeable Supplier References:\u003c\/strong\u003e\n \u003cp\u003e5WP33522-01  •  5WP33522-02  •  5WP33522-03  •  5WP33522-04  •  5WP33523-01  •  5WP33523-02  •  5WP33523-03  •  5WP33524-01  •  5WP33524-02  •  5WP33524-03  •  5WP33524-04\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the OEM number printed directly on your original Haldex control unit. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33522-03\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0042\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 4th generation Haldex\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed \/ Fully Tested \/ Functional\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Continental Haldex control unit with OEM number \u003cstrong style=\"color:#E3FC02;\"\u003e0AY907554D\u003c\/strong\u003e, designed for 4th generation Haldex AWD systems used across Volkswagen Group vehicles. The module manages rear axle engagement, controls clutch pressure through the hydraulic system and communicates with ABS, ESP and engine management electronics.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors speed difference between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls hydraulic pump pressure for rear clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e for clutch pressure regulation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 14px;\"\u003eTypical failures of the original controller can cause complete loss of AWD \/ 4WD, front-wheel-drive-only operation, poor traction on slippery surfaces, communication errors, N373 valve faults or ESP \/ ABS warning lights. This tested OEM replacement is intended to restore stable AWD operation in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eOnline Coding Support\u003c\/strong\u003e\n In most cases the unit is plug and play. If coding or adaptation is required after installation, online support is available and we can help with the correct procedure for your vehicle.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 14px;\"\u003eTypical applications for this Gen 4 Haldex control unit include the following vehicles. Always confirm the part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 \/ S3 (2009–2013)\u003c\/li\u003e\n \u003cli\u003eTT (2008–2012)\u003c\/li\u003e\n \u003cli\u003eQ3 (2011–2014)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf VI \/ Beetle \/ Jetta (2008–2013)\u003c\/li\u003e\n \u003cli\u003eCaddy III (2010–2015)\u003c\/li\u003e\n \u003cli\u003ePassat B6 \/ B7 4Motion (2008–2014)\u003c\/li\u003e\n \u003cli\u003ePassat CC (2008–2017)\u003c\/li\u003e\n \u003cli\u003eSharan II (2009–2015)\u003c\/li\u003e\n \u003cli\u003eTiguan (2008–2013)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia II 4x4 (2008–2013)\u003c\/li\u003e\n \u003cli\u003eYeti (2009–2014)\u003c\/li\u003e\n \u003cli\u003eSuperb II 4x4 (2008–2014)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra (2009–2015)\u003c\/li\u003e\n \u003cli\u003eAltea XL (2010–2015)\u003c\/li\u003e\n \u003cli\u003eLeon (2009–2012)\u003c\/li\u003e\n \u003cli\u003eToledo (2009–2012)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or your original ECU part number and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit can trigger fault codes, communication problems and complete loss of rear-wheel engagement. Typical symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – All Wheel Drive Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Clutch Control Valve N373 Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM \/ Internal Controller Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Internal Control Module Memory Error\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eComplete loss of AWD \/ 4WD or rear-wheel drive not engaging\u003c\/li\u003e\n \u003cli\u003eShuddering in tight low-speed turns at full lock\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex control unit on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the old module\u003c\/li\u003e\n \u003cli\u003eInstall the replacement unit and secure all mounting points properly\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eIn most cases no coding is required after installation\u003c\/li\u003e\n \u003cli\u003eIf fitting a unit from an automatic \/ DSG vehicle into a manual gearbox car, perform Basic Settings in VCDS (22-AWD module, channel 20) to clear fault code 01315\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm proper AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Service Items\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eChange the Haldex oil and filter during replacement\u003c\/li\u003e\n \u003cli\u003eCheck or replace the Haldex control valve \u003cstrong\u003eN373\u003c\/strong\u003e if faulty\u003c\/li\u003e\n \u003cli\u003eInspect the rear wiring connector, harness and clutch pump\u003c\/li\u003e\n \u003cli\u003eClear stored AWD, ABS and ESP related faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the control unit requires coding assistance after installation, our technical team is available to help. Reach us using the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"3b52555d547b585a4948165e584e15585456\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Sealing Failure\u003c\/h3\u003e\n \u003cp\u003eMoisture and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and complete AWD malfunction.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Pump Related Faults\u003c\/h3\u003e\n \u003cp\u003eFailure of the Haldex control valve N373 or clutch pump can overload the AWD system and trigger recurring module-related diagnostic errors, engagement issues or loss of rear-wheel drive.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eEEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eInternal control unit malfunction\u003c\/li\u003e\n \u003cli\u003eCommunication failures caused by the module itself\u003c\/li\u003e\n \u003cli\u003eFaults related to internal memory or controller operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or incompatible vehicle fitment\u003c\/li\u003e\n \u003cli\u003eExternal wiring, valve, pump or drivetrain faults\u003c\/li\u003e\n \u003cli\u003ePhysical damage, water damage after installation or mishandling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003ePlease verify the part number before ordering\u003c\/li\u003e\n \u003cli\u003eImages are for illustrative purposes only\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003cli\u003eChanging Haldex oil and filter and checking valve N373 is recommended when fitting a replacement ECU\u003c\/li\u003e\n \u003cli\u003eOnline coding support is available if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52236839453005,"sku":null,"price":279.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-5wp33531-ford","title":"5wp33531 Haldex control unit Ford Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 5WP33531 Haldex control unit for Ford Kuga AWD. Continental Gen 4 rear differential module, fully tested with warranty and online support.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP33531, 5WP33531-02, 5WP33531-01, 114793-01, 9V4N-04C016-AD, 9V4N-04C016-AE, Haldex control unit, Ford Kuga AWD, Continental, HAP542, Gen 4 Haldex, rear differential ECU\"\u003e\n \u003ctitle\u003e5WP33531 Haldex Control Unit Ford Kuga AWD | Used Continental OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 5WP33531 – Ford Kuga AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP33531 \/ 5WP33531-02\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eContinental rear differential control module for Ford Kuga AWD vehicles with 4th generation Haldex coupling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n HAP542 \/ 5WP33531\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eFord Reference\u003c\/strong\u003e\n 114793-01 \/ 9V4N-04C016-AD \/ AE\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eUsed \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Haldex control unit for Ford Gen 4 AWD systems designed to restore proper coupling engagement and rear axle drive support in compatible Ford Kuga vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP33531-02  •  5WP33531  •  5WP33531-01\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eFord \/ Supplier References:\u003c\/strong\u003e\n \u003cp\u003e114793-01  •  9V4N-04C016-AD  •  9V4N-04C016-AE  •  HAP542\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Please compare the printed number on your current Haldex controller before ordering. Vehicle model alone is not always enough to guarantee compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ AWD Module)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHAP542 \/ 5WP33531\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFord Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e114793-01 \/ 9V4N-04C016-AD \/ 9V4N-04C016-AE\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eFord Kuga AWD (2008–2012)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Fully Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupport:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOnline support in case the module needs coding assistance\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a used Continental Haldex control unit for Ford Gen 4 AWD systems with OEM number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP33531-02\u003c\/strong\u003e. It is intended for the rear differential Haldex system in Ford Kuga AWD vehicles and helps restore proper clutch engagement, rear axle activation and stable drivetrain communication.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls the Haldex coupling for rear-wheel engagement when needed\u003c\/li\u003e\n \u003cli\u003eSupports stable AWD \/ 4x4 operation in Ford Kuga vehicles\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS \/ ESP and related drivetrain systems\u003c\/li\u003e\n \u003cli\u003eStores and reports fault codes when the AWD system detects problems\u003c\/li\u003e\n \u003cli\u003eHelps restore correct rear differential control when the original ECU has failed\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eUsed OEM Replacement\u003c\/strong\u003e\n This controller is intended as an OEM replacement for compatible Ford Kuga AWD vehicles using the matching Haldex Gen 4 control unit. Online support is available if setup or coding help is required.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex control unit is intended for Ford AWD applications using the matching 4th generation Haldex rear differential module. Always verify the exact printed number on your original unit before purchase.\u003c\/p\u003e\n\n \u003ch3\u003eFord\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eFord Kuga AWD (12\/2008–2012)\u003c\/li\u003e\n \u003cli\u003eFord Kuga 2.0 TDCi 4x4 (2010–2011)\u003c\/li\u003e\n \u003cli\u003eFord Kuga 2.5i 4x4 (2010–2011)\u003c\/li\u003e\n \u003cli\u003eVehicles fitted with matching 5WP33531-01 \/ 5WP33531-02 controller\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n Send us your VIN number or a photo of your existing Haldex module label and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with the Haldex control unit can cause AWD malfunction, no rear-drive engagement and dashboard warning lights. Common fault codes and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eB2477\u003c\/code\u003e – Control unit configuration error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eP0960\u003c\/code\u003e – Pressure regulating solenoid valve electrical circuit fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – No communication possible with the Haldex ECU\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eN373\u003c\/code\u003e – Haldex clutch control valve fault\u003c\/li\u003e\n \u003cli\u003eESP \/ ABS warning lights on the dashboard\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 not engaging correctly\u003c\/li\u003e\n \u003cli\u003eLoss of rear axle drive support\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eDisconnect the battery and safely access the Haldex module on the rear differential\u003c\/li\u003e\n \u003cli\u003eRemove the old controller and inspect the connector pins and housing for corrosion or moisture\u003c\/li\u003e\n \u003cli\u003eInstall the replacement ECU carefully and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm communication with a suitable diagnostic tool\u003c\/li\u003e\n \u003cli\u003eCarry out coding if required after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended While Replacing the Unit\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCheck the Haldex control valve N373 if related faults are stored\u003c\/li\u003e\n \u003cli\u003eInspect the wiring, connectors and surrounding module area\u003c\/li\u003e\n \u003cli\u003eVerify rear axle engagement after installation and road test\u003c\/li\u003e\n \u003cli\u003eCheck for stored ABS \/ ESP \/ AWD faults after fitting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module needs coding assistance or you need help with compatibility, reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"771e19111837141605045a1214025914181a\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Moisture Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eWater or corrosion inside the module or connector can interrupt communication and damage the internal electronics.\u003c\/p\u003e\n\n \u003ch3\u003e2. Valve or Hydraulic Faults\u003c\/h3\u003e\n \u003cp\u003eHaldex valve or pressure-control problems can overload the ECU and trigger repeated AWD faults or loss of clutch engagement.\u003c\/p\u003e\n\n \u003ch3\u003e3. Internal Electronic Failure\u003c\/h3\u003e\n \u003cp\u003eAge, vibration and thermal cycling can lead to internal circuit problems, unstable AWD operation and stored fault codes.\u003c\/p\u003e\n\n \u003ch3\u003e4. Wiring or Power Supply Problems\u003c\/h3\u003e\n \u003cp\u003eDamaged wiring or weak power supply can create no-communication faults and prevent the rear axle system from operating correctly.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWarranty \u0026amp; Support\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003eWarranty of Functionality:\u003c\/strong\u003e This used Haldex control unit is supplied with functionality warranty and online support in case the module needs coding or installation guidance.\u003c\/p\u003e\n\n \u003ch3\u003eSupport Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eCompatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eBasic installation and coding advice\u003c\/li\u003e\n \u003cli\u003eHelp with identifying common diagnostic issues\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, installation guidance and diagnostics support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify this module fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available – if your country is not shown at checkout, contact directly for manual processing\u003c\/li\u003e\n \u003cli\u003eController is intended for Ford Kuga AWD applications only where the original number matches\u003c\/li\u003e\n \u003cli\u003eOnline support is included if the module needs coding assistance\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52387709681997,"sku":null,"price":309.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-7h0907554c-refurbished","title":"7H0907554C Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 7H0907554C Haldex Gen 2 Control Unit for VW Transporter T5 \u0026amp; Multivan 4Motion AWD. Siemens, new silicone \u0026amp; cover, 12-month warranty. Compatible with 7H0907554, 7H0907554A, 7H0907554B, 7H0907554C. Cars-ECU.com.\"\u003e\n \u003cmeta name=\"keywords\" content=\"7H0907554C, 7H0907554, 7H0907554E, Haldex Gen 2, Haldex generation 2, VW Transporter T5 Haldex, Multivan 4Motion AWD, 5WP22223, HAP511, Haldex control unit refurbished, rear differential ECU\"\u003e\n \u003ctitle\u003e7H0907554C Haldex Gen 2 Control Unit – VW T5 Transporter Multivan 4Motion | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n\n body {\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n line-height: 1.6;\n color: #ffffff;\n background-color: #000000;\n }\n\n .container {\n max-width: 1200px;\n margin: 0 auto;\n padding: 20px;\n background-color: #000000;\n }\n\n .product-header {\n background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);\n color: white;\n padding: 30px;\n border-radius: 8px;\n margin-bottom: 30px;\n border: 2px solid #E3FC02;\n }\n\n .product-header h1 {\n font-size: 2em;\n margin-bottom: 10px;\n font-weight: 600;\n color: #ffffff;\n }\n\n .product-header .part-number {\n font-size: 1.3em;\n font-weight: bold;\n background-color: #E3FC02;\n color: #000000;\n display: inline-block;\n padding: 8px 15px;\n border-radius: 5px;\n margin-top: 10px;\n }\n\n .info-section {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2);\n border: 1px solid #E3FC02;\n color: #ffffff;\n }\n\n .info-section h2 {\n color: #E3FC02;\n font-size: 1.4em;\n margin-bottom: 15px;\n padding-bottom: 10px;\n border-bottom: 2px solid #E3FC02;\n }\n\n .info-section h3 {\n color: #E3FC02;\n font-size: 1.1em;\n margin-top: 20px;\n margin-bottom: 10px;\n }\n\n .info-section p {\n color: #ffffff;\n }\n\n .info-section ul {\n color: #ffffff;\n }\n\n .info-section li {\n color: #ffffff;\n }\n\n .key-features {\n display: grid;\n grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));\n gap: 15px;\n margin-bottom: 20px;\n }\n\n .feature-box {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n color: #ffffff;\n }\n\n .feature-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 5px;\n }\n\n .oem-numbers {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n margin-bottom: 20px;\n }\n\n .oem-numbers strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n font-size: 1.1em;\n }\n\n .oem-numbers p {\n font-family: 'Courier New', monospace;\n font-size: 0.95em;\n line-height: 1.8;\n color: #ffffff;\n }\n\n .compatibility-list {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n }\n\n .compatibility-list ul {\n list-style: none;\n padding: 0;\n }\n\n .compatibility-list li {\n padding: 10px;\n margin-bottom: 8px;\n background-color: #2a2a2a;\n border-radius: 5px;\n border-left: 3px solid #E3FC02;\n color: #ffffff;\n }\n\n .compatibility-list li:before {\n content: \"✓ \";\n color: #E3FC02;\n font-weight: bold;\n margin-right: 8px;\n }\n\n .compat-table {\n width: 100%;\n border-collapse: collapse;\n margin-top: 10px;\n }\n\n .compat-table th {\n background-color: #E3FC02;\n color: #000000;\n padding: 10px;\n text-align: left;\n font-weight: 600;\n }\n\n .compat-table td {\n padding: 9px 10px;\n border-bottom: 1px solid #2a2a2a;\n color: #ffffff;\n }\n\n .compat-table tr:nth-child(even) td {\n background-color: #2a2a2a;\n }\n\n .compat-table tr:hover td {\n background-color: #333333;\n }\n\n .warning-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .warning-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .info-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .info-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .success-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .success-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .technical-specs {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-top: 15px;\n }\n\n .spec-row {\n display: contents;\n }\n\n .spec-label {\n background-color: #2a2a2a;\n padding: 10px;\n font-weight: 600;\n color: #E3FC02;\n border-radius: 3px;\n }\n\n .spec-value {\n background-color: #1a1a1a;\n padding: 10px;\n border-radius: 3px;\n color: #ffffff;\n }\n\n @media (max-width: 768px) {\n .technical-specs {\n grid-template-columns: 1fr;\n }\n\n .spec-label {\n border-bottom: none;\n border-radius: 3px 3px 0 0;\n }\n\n .spec-value {\n border-radius: 0 0 3px 3px;\n margin-bottom: 10px;\n }\n }\n\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n\n .fault-codes {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n margin-top: 15px;\n }\n\n .fault-codes ul {\n list-style: none;\n padding: 0;\n column-count: 2;\n column-gap: 20px;\n }\n\n .fault-codes li {\n padding: 5px 0;\n font-size: 0.9em;\n color: #ffffff;\n break-inside: avoid;\n }\n\n .fault-codes code {\n color: #E3FC02;\n background-color: #1a1a1a;\n padding: 2px 6px;\n border-radius: 3px;\n font-weight: 600;\n }\n\n @media (max-width: 768px) {\n .fault-codes ul {\n column-count: 1;\n }\n }\n\n footer {\n text-align: center;\n padding: 20px;\n color: #b0b0b0;\n font-size: 0.9em;\n margin-top: 30px;\n border-top: 1px solid #E3FC02;\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003c!-- HEADER --\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Gen 2 Control Unit – VW T5 Transporter \/ Multivan 4Motion\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 7H0907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eRefurbished Siemens – Rear Differential Control Module for VW Group 4Motion AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- KEY FEATURES --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 2 (2nd Generation)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Tested \u0026amp; Verified\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Professionally refurbished with new silicone sealing and cover for durability equivalent to a new module. Tested and verified for CAN-bus communication and AWD clutch control function before dispatch.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- OEM PART NUMBERS --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain Part Number (VW OEM):\u003c\/strong\u003e\n \u003cp\u003e7H0907554C  •  7H0 907 554 C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Superseded Numbers:\u003c\/strong\u003e\n \u003cp\u003e7H0907554  •  7H0907554A  •  7H0907554B  •  7H0907554C  •  7H0525130\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSiemens \/ Supplier Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP22223-02  •  5WP2222302  •  HAP511\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware Versions (from unit):\u003c\/strong\u003e\n \u003cp\u003eSW: 0107  •  HW: H05\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Important – Verify Before Ordering\u003c\/strong\u003e\n Always check the part number printed directly on your existing Haldex control unit before placing an order. The 7H0907554 series is exclusive to VW T5 Transporter \/ Multivan 4Motion (7H \/ 7J body). It is \u003cstrong\u003eNOT compatible\u003c\/strong\u003e with 1K0907554 variants used in Golf, Tiguan, Passat 4Motion.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- TECHNICAL SPECIFICATIONS --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHaldex Generation:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e2nd Generation (Gen 2)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ RDCM)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSiemens Part No.:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e5WP22223-02 (HAP511)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW: 0107\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW: H05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens (VDO)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVW Transporter T5 \/ Multivan 4Motion AWD\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eProgramming Required:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eCoding required – online support included\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- PRODUCT DESCRIPTION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a professionally refurbished Siemens Haldex 2nd generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e7H0907554C\u003c\/strong\u003e (Siemens reference \u003cstrong style=\"color: #E3FC02;\"\u003e5WP22223-02 \/ HAP511\u003c\/strong\u003e), designed for the VW Transporter T5 and Multivan 4Motion AWD system. The unit has been rebuilt with new silicone sealing and a new cover, giving it durability equivalent to a new module. It serves as the electronic brain of the rear Haldex coupling, responsible for activating and regulating rear-axle engagement based on traction demand and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors wheel speed differences between front and rear axles via ABS sensors\u003c\/li\u003e\n \u003cli\u003eControls the Haldex hydraulic pump to build clutch engagement pressure\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive engagement on demand (slip-dependent)\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management systems via CAN-bus\u003c\/li\u003e\n \u003cli\u003eControls the N373 Haldex solenoid valve for clutch pack regulation\u003c\/li\u003e\n \u003cli\u003eManages pump calibration and learns optimal pressure values\u003c\/li\u003e\n \u003cli\u003eProtects the coupling from overheating via thermal management logic\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e🔧 Refurbishment Details\u003c\/strong\u003e\n This unit has been professionally refurbished: \u003cstrong\u003enew silicone sealing\u003c\/strong\u003e applied to all housing joints and a \u003cstrong\u003enew protective cover\u003c\/strong\u003e fitted, restoring full moisture and dust protection. The internal PCB has been tested for CAN-bus communication, pump driver circuits and solenoid control. The result is a unit with durability equivalent to a new OEM module.\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit must be coded to the vehicle using VCDS, ODIS, or equivalent VAG diagnostic software. A \u003cstrong\u003ePump Learn \/ Basic Settings\u003c\/strong\u003e calibration must be performed with the engine running to correctly calibrate pump pressure values. Without this step, the AWD system may not engage properly. Online support is included – contact us at \u003cstrong\u003einfo@cars-ecu.com\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- VEHICLE COMPATIBILITY --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe \u003cstrong\u003e7H0907554C\u003c\/strong\u003e is designed exclusively for \u003cstrong\u003eVW Transporter T5 and Multivan 4Motion\u003c\/strong\u003e (body codes 7H, 7E, 7J) equipped with the 2nd generation Haldex AWD coupling. Always verify the part number on your existing unit before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003ctable class=\"compat-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eBody Code\u003c\/th\u003e\n \u003cth\u003eDrive\u003c\/th\u003e\n \u003cth\u003eProduction\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTransporter T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 11\/2010\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTransporter T5 (facelift)\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e11\/2009 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMultivan T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7HM, 7HN, 7HF\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCaravelle T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ VIN Range Notice\u003c\/strong\u003e\n The 7H0907554 series fits VW T5 Transporter \/ Multivan up to VINs \u003cstrong\u003eWV*ZZZ7H*A*050000\u003c\/strong\u003e and \u003cstrong\u003eWV*ZZZ7J*A*010000\u003c\/strong\u003e (approximately up to 2010 production). Later T5 models and T6 variants use different controller variants. Always verify by checking the part number label on the existing unit.\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing module. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- COMMON FAULT CODES --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA faulty Haldex Gen 2 control unit typically triggers one or more of these diagnostic codes. Use VCDS, ODIS or a professional VAG scan tool to read module \u003cstrong\u003e22 (AWD \/ 4WD)\u003c\/strong\u003e – basic OBD2 readers cannot access this module.\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective \/ Internal failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module J492 (AWD): No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – N373 Haldex Solenoid Valve: Electrical fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC1112\u003c\/code\u003e – Haldex Clutch Pump: Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC1113\u003c\/code\u003e – AWD Clutch: Mechanical failure \/ No engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0114\u003c\/code\u003e – Lost Communication with AWD Control Module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16670\u003c\/code\u003e – All-Wheel Drive C1113 07: Mechanical Failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16671\u003c\/code\u003e – Haldex Clutch Pump C1112 04: Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16668\u003c\/code\u003e – Haldex Pump C1112 07: Mechanical Failure Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16666\u003c\/code\u003e – Haldex Pump C1112 13: Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS light\u003c\/code\u003e – AWD system disabled, traction control affected\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – Module fails to respond to scan tool\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n Use a professional VAG-compatible scan tool (VCDS, ODIS, VCP) to read AWD module faults. Basic OBD2 readers and phone apps typically cannot communicate with the Haldex AWD controller (module address 22). Always scan module 22 specifically for accurate fault diagnosis. If the module shows \"No Communication\", check fuses, CAN-bus wiring and ground points before replacing the unit.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- INSTALLATION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit on the rear differential \/ Haldex coupling housing\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the mounting bolts\u003c\/li\u003e\n \u003cli\u003eCarefully detach the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003eFit the replacement unit and secure all mounting points to correct torque\u003c\/li\u003e\n \u003cli\u003eReconnect the electrical connector and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform Pump Learn \/ Basic Settings calibration (engine must be running)\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and take a test drive to verify AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003ePump Learn – Required After Every Installation\u003c\/h3\u003e\n \u003cp\u003eThe Pump Learn calibration is a mandatory step whenever a Haldex control unit is replaced. Without it, the unit will not supply correct power to the pump, resulting in no AWD engagement. Use VCDS or ODIS, navigate to module \u003cstrong\u003e22 AWD → Basic Settings → Pump Motor calibration\u003c\/strong\u003e. The procedure takes approximately 1 minute with the engine running.\u003c\/p\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Support Included\u003c\/strong\u003e\n If the module requires coding or you need assistance with the Pump Learn procedure, we provide online technical support. Contact us via the button below or email \u003cstrong\u003einfo@cars-ecu.com\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace the N373 Haldex solenoid valve\u003c\/strong\u003e – highly recommended when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil (Gen 2 fluid) and clean the pump gauze strainer\u003c\/li\u003e\n \u003cli\u003eInspect the electrical connector for corrosion or damaged pins\u003c\/li\u003e\n \u003cli\u003eVerify both 12V power supply fuses for the Haldex system\u003c\/li\u003e\n \u003cli\u003eCheck CAN-bus wiring to ABS\/ESP module for continuity\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes after installation and test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- WHY HALDEX UNITS FAIL --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is mounted on the rear differential in an exposed undercarriage location. Moisture and road water can penetrate the housing over time, corroding the internal circuit board and causing communication failures or complete unit shutdown.\u003c\/p\u003e\n\n \u003ch3\u003e2. N373 Solenoid Valve Damage\u003c\/h3\u003e\n \u003cp\u003eThe N373 Haldex solenoid valve controls oil flow to the clutch pack. A failed or electrically faulty N373 valve sends abnormal current signals back to the control unit, which can trigger fault codes and, in severe cases, damage the ECU's internal driver circuits.\u003c\/p\u003e\n\n \u003ch3\u003e3. Pump Calibration Data Corruption\u003c\/h3\u003e\n \u003cp\u003eThe internal memory stores learned pump calibration values. A failing or blocked pump causes incorrect data to be written to the calibration table. Once these values drift outside acceptable limits, the unit triggers fault codes and disables AWD engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Heat \u0026amp; Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eRepeated AWD engagement cycles under load generate heat that degrades solder joints and electronic components within the control unit over extended service life – especially on high-mileage T5 Transporters used for commercial purposes. The refurbishment process addresses this by replacing the silicone sealing and cover, restoring full protection against heat and moisture.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Prevention – Recommended Service Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eChange Haldex Gen 2 oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eClean pump gauze strainer during each oil service\u003c\/li\u003e\n \u003cli\u003eInspect N373 solenoid valve every 80,000 km or at first fault\u003c\/li\u003e\n \u003cli\u003eInspect the wiring harness and connector regularly for corrosion\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- QUALITY \u0026 WARRANTY --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is backed by a 12-month warranty covering all functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD \/ ABS \/ ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve driver circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage caused by incorrect installation, failure to perform Pump Learn calibration, incompatible vehicle fitment, external electrical faults (blown fuses, damaged wiring), or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ It is strongly recommended to replace the N373 Haldex solenoid valve and Haldex oil when fitting this control unit.\u003c\/strong\u003e\n A faulty N373 valve is one of the most common causes of control unit damage. Fresh oil protects the new unit and ensures accurate pump calibration. Use only approved Haldex Gen 2 fluid.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- SHIPPING --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eShipping\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWorldwide Shipping\u003c\/strong\u003e – We ship to most countries globally. If your country is not available at checkout, please contact us directly and we will process the order personally.\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eSecurely packaged to prevent damage in transit\u003c\/li\u003e\n \u003cli\u003eTracking number provided for all shipments\u003c\/li\u003e\n \u003cli\u003eExpress options available – contact us for details\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- CONTACT --\u003e\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eNeed Help or Have a Question?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is available to assist with compatibility checks, coding guidance, and Pump Learn support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003c!-- IMPORTANT PURCHASE INFORMATION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePart Number Verification:\u003c\/strong\u003e Confirm the part number on your existing unit matches 7H0907554C or the listed compatible codes before ordering\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eNOT Compatible With:\u003c\/strong\u003e 1K0907554 series (Golf, Passat, Tiguan 4Motion) – different generation and connector type\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePump Learn Required:\u003c\/strong\u003e Always perform the Pump Learn calibration after installation – this step is mandatory for correct AWD operation\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eN373 Valve:\u003c\/strong\u003e It is strongly recommended to replace the N373 Haldex solenoid valve at the same time\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eHaldex Oil:\u003c\/strong\u003e Replace Haldex Gen 2 fluid during installation for best results and to protect the replacement unit\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePhotos:\u003c\/strong\u003e Product photos are for illustrative purposes only – actual unit may vary in appearance\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eOnline Support:\u003c\/strong\u003e Contact us at info@cars-ecu.com for coding assistance or technical questions\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© 2024 Cars-ECU.com | Professional Automotive Electronics\u003c\/p\u003e\n \u003cp style=\"margin-top: 10px;\"\u003eAll trademarks and brand names are property of their respective owners\u003c\/p\u003e\n \u003c\/footer\u003e\n\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52423843021133,"sku":null,"price":489.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_6f237bf8-5b60-4def-98ad-049e0f03750d.jpg?v=1741337565"},{"product_id":"haldex-control-unit-fk724c170aa","title":"FK72-4C170-AA Haldex control unit Land Rover Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used FK72-4C170-AA Haldex control unit for Land Rover AWD. Original BorgWarner Gen 5 Efficient Driveline module, tested with 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"FK72-4C170-AA, FK724C170AA, LR073537, Haldex control unit, Land Rover AWD, Range Rover Evoque, Discovery Sport, BorgWarner, Gen 5 Haldex, Efficient Driveline, RDCM, DEM, 116260, EGP6A, ALMG3\"\u003e\n \u003ctitle\u003eFK72-4C170-AA Haldex Control Unit Land Rover AWD | Used BorgWarner OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed OEM Haldex Control Unit FK72-4C170-AA – Land Rover AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: FK72-4C170-AA\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal BorgWarner rear differential control module for Land Rover and Range Rover AWD vehicles with Haldex Gen 5 Efficient Driveline system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation – Efficient Driveline\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eLand Rover OEM\u003c\/strong\u003e\n FK72-4C170-AA \/ LR073537\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\n 116260 \/ EGP6A \/ ALMG3\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Unit has been cleaned, tested and verified for CAN-bus communication and AWD clutch control function. Ready for installation into compatible Land Rover \/ Range Rover AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Numbers:\u003c\/strong\u003e\n \u003cp\u003eFK72-4C170-AA  •  FK724C170AA  •  FK72 4C170 AA\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eLand Rover Current \/ Alternate OEM:\u003c\/strong\u003e\n \u003cp\u003eLR073537\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eBorgWarner \/ Supplier Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e116260  •  EGP6A  •  ALMG3\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eImportant – Verify Before Ordering\u003c\/strong\u003e\n Always check the part number printed directly on your existing Haldex control unit before ordering. Discovery Sport and Range Rover Evoque may be fitted with either Efficient Driveline (Haldex Gen 5) or Dynamic Driveline (GKN) AWD systems – these are not interchangeable.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHaldex Generation:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e5th Generation (Gen 5) – Efficient Driveline\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (RDCM \/ DEM)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eLand Rover OEM:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eFK72-4C170-AA \/ LR073537\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSupplier Reference:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e116260 (BorgWarner)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eLand Rover \/ Range Rover AWD vehicles (2015–2019)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eProgramming Required:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCoding required – VIN matching needed after installation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original BorgWarner Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003eFK72-4C170-AA\u003c\/strong\u003e, Land Rover OEM reference \u003cstrong style=\"color: #E3FC02;\"\u003eLR073537\u003c\/strong\u003e, designed for Land Rover and Range Rover Active On-Demand AWD systems using the Haldex Gen 5 Efficient Driveline setup. Known as the RDCM, this unit is the electronic brain of the rear coupling and manages rear-wheel-drive engagement when traction is needed.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors wheel-speed differences between front and rear axles via ABS sensors\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump to build rear clutch engagement pressure\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel-drive engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP, TCM, BCM and engine management via CAN-bus\u003c\/li\u003e\n \u003cli\u003eManages oil temperature monitoring and thermal overload protection\u003c\/li\u003e\n \u003cli\u003eSupports Terrain Response and Hill Descent Control integration\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, this control unit must be programmed to the vehicle using a Land Rover-compatible diagnostic tool such as IDS or SDD. The unit must be matched to the vehicle VIN. Without programming, the AWD system will not function correctly.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe FK72-4C170-AA fits Land Rover and Range Rover models equipped with the Haldex Gen 5 Efficient Driveline AWD system. Always verify the part number on your existing unit and confirm your vehicle has Haldex Efficient Driveline, not the GKN Dynamic Driveline variant.\u003c\/p\u003e\n\n \u003ch3\u003eLand Rover \/ Range Rover\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eLand Rover Discovery Sport (L550) – 01\/2015 to 12\/2019\u003c\/li\u003e\n \u003cli\u003eRange Rover Evoque I (L538) – 09\/2015 to 12\/2018\u003c\/li\u003e\n \u003cli\u003eRange Rover Evoque II (L551) – 01\/2016 to 12\/2019\u003c\/li\u003e\n \u003cli\u003eVehicles fitted with Haldex Gen 5 Efficient Driveline AWD only\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eHaldex vs GKN – Important Distinction\u003c\/strong\u003e\n Efficient Driveline = Haldex Gen 5 and this unit fits. Dynamic Driveline = GKN system and this unit does not fit. Confirm which system your vehicle has before ordering.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex Gen 5 RDCM in Land Rover \/ Range Rover models can stop AWD operation or cause intermittent drivetrain faults. Common diagnostic issues and symptoms include:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eU0001-00\u003c\/code\u003e – High Speed CAN Communication Bus fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0100-00\u003c\/code\u003e – Lost Communication With ECM \/ PCM\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0121-00\u003c\/code\u003e – Lost Communication With ABS Control Module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0138-00\u003c\/code\u003e – Lost Communication With All Terrain Control Module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0140-00\u003c\/code\u003e – Lost Communication With Body Control Module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0300-00\u003c\/code\u003e – Internal Control Module Software Incompatibility\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU2101-00\u003c\/code\u003e – Control Module Configuration Incompatible\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eP1889-74\u003c\/code\u003e, \u003ccode\u003eP1889-14\u003c\/code\u003e, \u003ccode\u003eP1889-49\u003c\/code\u003e – Oil pressure pump performance faults\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eP0748-14\u003c\/code\u003e – Pressure Control Solenoid A fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eP0607-49\u003c\/code\u003e \/ \u003ccode\u003eP0602-54\u003c\/code\u003e – Internal control module or programming faults\u003c\/li\u003e\n \u003cli\u003eDashboard warnings such as \u003cstrong\u003eHDC Fault System Not Available\u003c\/strong\u003e, \u003cstrong\u003eTransmission Fault\u003c\/strong\u003e and \u003cstrong\u003eTraction Reduced\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eLoss of 4WD \/ AWD engagement, occasional non-start conditions, or grabbing \/ skipping in tight turns\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex RDCM on the rear differential \/ coupling housing\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the mounting bolts\u003c\/li\u003e\n \u003cli\u003eCarefully detach the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003eFit the replacement unit and secure all mounting points to the correct torque\u003c\/li\u003e\n \u003cli\u003eReconnect the electrical connector and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eConnect a Land Rover-compatible diagnostic tool and program the unit to the vehicle VIN\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive to verify AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace Haldex Gen 5 oil and clean the pump gauze strainer\u003c\/li\u003e\n \u003cli\u003eInspect the electrical connector and wiring harness for corrosion or damaged pins\u003c\/li\u003e\n \u003cli\u003eCheck the rear differential breather pipe for blockage\u003c\/li\u003e\n \u003cli\u003eVerify 12V power supply fuses for the Haldex system\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If you need help with diagnostics, compatibility or coding, reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f891969e97b89b998a8bd59d9b8dd69b9795\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe RDCM is mounted in an exposed undercarriage position where moisture can enter over time, corroding the PCB and causing communication failures or complete shutdown.\u003c\/p\u003e\n\n \u003ch3\u003e2. Oil Pump Failure \u0026amp; Pressure Loss\u003c\/h3\u003e\n \u003cp\u003eA blocked pump gauze or failing pump motor causes incorrect pressure values and can disable AWD operation while logging pump performance faults.\u003c\/p\u003e\n\n \u003ch3\u003e3. Software \/ Programming Issues\u003c\/h3\u003e\n \u003cp\u003eIncorrect VIN programming or software incompatibility after battery or ECU work can prevent the RDCM from communicating with other modules, resulting in AWD loss without a mechanical fault.\u003c\/p\u003e\n\n \u003ch3\u003e4. Heat \u0026amp; Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eRepeated AWD engagement under load can generate heat that degrades solder joints and internal electronics, leading to intermittent faults that worsen over time.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is backed by a 12-month warranty covering functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCAN-bus communication failures with AWD \/ ABS \/ BCM modules\u003c\/li\u003e\n \u003cli\u003ePump control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions:\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation\u003c\/li\u003e\n \u003cli\u003eFailure to program the unit to the vehicle VIN\u003c\/li\u003e\n \u003cli\u003eIncompatible vehicle fitment, including GKN Dynamic Driveline vehicles\u003c\/li\u003e\n \u003cli\u003eExternal electrical faults or physical damage during handling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is ready to assist with compatibility checks, coding guidance and installation support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the part number on your existing unit before ordering\u003c\/li\u003e\n \u003cli\u003eConfirm your vehicle has the Haldex Efficient Driveline system, not the GKN Dynamic Driveline variant\u003c\/li\u003e\n \u003cli\u003eThis unit must be programmed to the vehicle VIN after installation\u003c\/li\u003e\n \u003cli\u003eReplace Haldex Gen 5 fluid during installation for best results\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":52432433971533,"sku":null,"price":279.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/photo_2025-09-17_13-44-33.jpg?v=1758109836"},{"product_id":"haldex-control-unit-7h0907554d","title":"7H0907554D Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 7H0907554D Haldex Gen 2 Control Unit for VW Transporter T5 \u0026amp; Multivan 4Motion AWD. Siemens OEM, tested \u0026amp; verified. 12-month warranty. Compatible with 7H0907554, 7H0907554A, 7H0907554B, 7H0907554C. Cars-ECU.com.\"\u003e\n \u003cmeta name=\"keywords\" content=\"7H0907554D, 7H0907554, Haldex Gen 2, Haldex generation 2, VW Transporter T5 Haldex, Multivan 4Motion AWD, 5WP22223, HAP511, Haldex control unit, rear differential ECU, VW 4x4 AWD module\"\u003e\n \u003ctitle\u003e7H0907554D Haldex Gen 2 Control Unit – VW T5 Transporter Multivan 4Motion | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n\n body {\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n line-height: 1.6;\n color: #ffffff;\n background-color: #000000;\n }\n\n .container {\n max-width: 1200px;\n margin: 0 auto;\n padding: 20px;\n background-color: #000000;\n }\n\n .product-header {\n background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);\n color: white;\n padding: 30px;\n border-radius: 8px;\n margin-bottom: 30px;\n border: 2px solid #E3FC02;\n }\n\n .product-header h1 {\n font-size: 2em;\n margin-bottom: 10px;\n font-weight: 600;\n color: #ffffff;\n }\n\n .product-header .part-number {\n font-size: 1.3em;\n font-weight: bold;\n background-color: #E3FC02;\n color: #000000;\n display: inline-block;\n padding: 8px 15px;\n border-radius: 5px;\n margin-top: 10px;\n }\n\n .info-section {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2);\n border: 1px solid #E3FC02;\n color: #ffffff;\n }\n\n .info-section h2 {\n color: #E3FC02;\n font-size: 1.4em;\n margin-bottom: 15px;\n padding-bottom: 10px;\n border-bottom: 2px solid #E3FC02;\n }\n\n .info-section h3 {\n color: #E3FC02;\n font-size: 1.1em;\n margin-top: 20px;\n margin-bottom: 10px;\n }\n\n .info-section p {\n color: #ffffff;\n }\n\n .info-section ul {\n color: #ffffff;\n }\n\n .info-section li {\n color: #ffffff;\n }\n\n .key-features {\n display: grid;\n grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));\n gap: 15px;\n margin-bottom: 20px;\n }\n\n .feature-box {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n color: #ffffff;\n }\n\n .feature-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 5px;\n }\n\n .oem-numbers {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n border-left: 4px solid #E3FC02;\n margin-bottom: 20px;\n }\n\n .oem-numbers strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n font-size: 1.1em;\n }\n\n .oem-numbers p {\n font-family: 'Courier New', monospace;\n font-size: 0.95em;\n line-height: 1.8;\n color: #ffffff;\n }\n\n .compatibility-list {\n background-color: #1a1a1a;\n padding: 20px;\n border-radius: 8px;\n margin-bottom: 20px;\n }\n\n .compatibility-list ul {\n list-style: none;\n padding: 0;\n }\n\n .compatibility-list li {\n padding: 10px;\n margin-bottom: 8px;\n background-color: #2a2a2a;\n border-radius: 5px;\n border-left: 3px solid #E3FC02;\n color: #ffffff;\n }\n\n .compatibility-list li:before {\n content: \"✓ \";\n color: #E3FC02;\n font-weight: bold;\n margin-right: 8px;\n }\n\n .compat-table {\n width: 100%;\n border-collapse: collapse;\n margin-top: 10px;\n }\n\n .compat-table th {\n background-color: #E3FC02;\n color: #000000;\n padding: 10px;\n text-align: left;\n font-weight: 600;\n }\n\n .compat-table td {\n padding: 9px 10px;\n border-bottom: 1px solid #2a2a2a;\n color: #ffffff;\n }\n\n .compat-table tr:nth-child(even) td {\n background-color: #2a2a2a;\n }\n\n .compat-table tr:hover td {\n background-color: #333333;\n }\n\n .warning-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .warning-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .info-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .info-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .success-box {\n background-color: #2a2a2a;\n border: 2px solid #E3FC02;\n border-radius: 5px;\n padding: 15px;\n margin: 20px 0;\n color: #ffffff;\n }\n\n .success-box strong {\n color: #E3FC02;\n display: block;\n margin-bottom: 8px;\n }\n\n .technical-specs {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-top: 15px;\n }\n\n .spec-row {\n display: contents;\n }\n\n .spec-label {\n background-color: #2a2a2a;\n padding: 10px;\n font-weight: 600;\n color: #E3FC02;\n border-radius: 3px;\n }\n\n .spec-value {\n background-color: #1a1a1a;\n padding: 10px;\n border-radius: 3px;\n color: #ffffff;\n }\n\n @media (max-width: 768px) {\n .technical-specs {\n grid-template-columns: 1fr;\n }\n\n .spec-label {\n border-bottom: none;\n border-radius: 3px 3px 0 0;\n }\n\n .spec-value {\n border-radius: 0 0 3px 3px;\n margin-bottom: 10px;\n }\n }\n\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n\n .fault-codes {\n background-color: #2a2a2a;\n padding: 15px;\n border-radius: 5px;\n margin-top: 15px;\n }\n\n .fault-codes ul {\n list-style: none;\n padding: 0;\n column-count: 2;\n column-gap: 20px;\n }\n\n .fault-codes li {\n padding: 5px 0;\n font-size: 0.9em;\n color: #ffffff;\n break-inside: avoid;\n }\n\n .fault-codes code {\n color: #E3FC02;\n background-color: #1a1a1a;\n padding: 2px 6px;\n border-radius: 3px;\n font-weight: 600;\n }\n\n @media (max-width: 768px) {\n .fault-codes ul {\n column-count: 1;\n }\n }\n\n footer {\n text-align: center;\n padding: 20px;\n color: #b0b0b0;\n font-size: 0.9em;\n margin-top: 30px;\n border-top: 1px solid #E3FC02;\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003c!-- HEADER --\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Gen 2 Control Unit – VW T5 Transporter \/ Multivan 4Motion\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 7H0907554D\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for VW Group 4Motion AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- KEY FEATURES --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 2 (2nd Generation)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Every control unit is individually tested before dispatch. This unit is fully functional and ready for direct installation into compatible VW 4Motion AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- OEM PART NUMBERS --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain Part Number (VW OEM):\u003c\/strong\u003e\n \u003cp\u003e7H0907554D  •  7H0 907 554 D\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eCompatible \/ Superseded Numbers:\u003c\/strong\u003e\n \u003cp\u003e7H0907554  •  7H0907554A  •  7H0907554B  •  7H0907554C  •  7H0525130\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSiemens \/ Supplier Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP22223-03  •  5WP2222303  •  HAP511  •  104573-06\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware Versions (from unit):\u003c\/strong\u003e\n \u003cp\u003eSW: 2108  •  HW: H05\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Important – Verify Before Ordering\u003c\/strong\u003e\n Always check the part number printed directly on your existing Haldex control unit before placing an order. The 7H0907554 series is exclusive to VW T5 Transporter \/ Multivan 4Motion (7H \/ 7J body). It is \u003cstrong\u003eNOT compatible\u003c\/strong\u003e with 1K0907554 variants used in Golf, Tiguan, Passat 4Motion.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- TECHNICAL SPECIFICATIONS --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHaldex Generation:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e2nd Generation (Gen 2)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ RDCM)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSiemens Part No.:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e5WP22223-03 (HAP511)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW: 2108\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW: H05\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens (VDO)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVW Transporter T5 \/ Multivan 4Motion AWD\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eProgramming Required:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eCoding required – online support included\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- PRODUCT DESCRIPTION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Siemens Haldex 2nd generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e7H0907554D\u003c\/strong\u003e (Siemens reference \u003cstrong style=\"color: #E3FC02;\"\u003e5WP22223-03 \/ HAP511\u003c\/strong\u003e), designed for the VW Transporter T5 and Multivan 4Motion AWD system. It serves as the electronic brain of the rear Haldex coupling, responsible for activating and regulating rear-axle engagement based on traction demand and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors wheel speed differences between front and rear axles via ABS sensors\u003c\/li\u003e\n \u003cli\u003eControls the Haldex hydraulic pump to build clutch engagement pressure\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive engagement on demand (slip-dependent)\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management systems via CAN-bus\u003c\/li\u003e\n \u003cli\u003eControls the N373 Haldex solenoid valve for clutch pack regulation\u003c\/li\u003e\n \u003cli\u003eManages pump calibration and learns optimal pressure values\u003c\/li\u003e\n \u003cli\u003eProtects the coupling from overheating via thermal management logic\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit must be coded to the vehicle using VCDS, ODIS, or equivalent VAG diagnostic software. A \u003cstrong\u003ePump Learn \/ Basic Settings\u003c\/strong\u003e calibration must be performed with the engine running to correctly calibrate pump pressure values. Without this step, the AWD system may not engage properly. Online support is included – contact us at \u003cstrong\u003einfo@cars-ecu.com\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- VEHICLE COMPATIBILITY --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe \u003cstrong\u003e7H0907554D\u003c\/strong\u003e is designed exclusively for \u003cstrong\u003eVW Transporter T5 and Multivan 4Motion\u003c\/strong\u003e (body codes 7H, 7E, 7J) equipped with the 2nd generation Haldex AWD coupling. Always verify the part number on your existing unit before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003ctable class=\"compat-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eBody Code\u003c\/th\u003e\n \u003cth\u003eDrive\u003c\/th\u003e\n \u003cth\u003eProduction\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTransporter T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 11\/2010\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTransporter T5 (facelift)\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e11\/2009 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMultivan T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7HM, 7HN, 7HF\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCaravelle T5\u003c\/td\u003e\n \u003ctd\u003e7H, 7E\u003c\/td\u003e\n \u003ctd\u003e4Motion AWD\u003c\/td\u003e\n \u003ctd\u003e04\/2003 – 04\/2015\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ VIN Range Notice\u003c\/strong\u003e\n The 7H0907554 series fits VW T5 Transporter \/ Multivan up to VINs \u003cstrong\u003eWV*ZZZ7H*A*050000\u003c\/strong\u003e and \u003cstrong\u003eWV*ZZZ7J*A*010000\u003c\/strong\u003e (approximately up to 2010 production). Later T5 models and T6 variants use different controller variants. Always verify by checking the part number label on the existing unit.\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing module. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- COMMON FAULT CODES --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA faulty Haldex Gen 2 control unit typically triggers one or more of these diagnostic codes. Use VCDS, ODIS or a professional VAG scan tool to read module \u003cstrong\u003e22 (AWD \/ 4WD)\u003c\/strong\u003e – basic OBD2 readers cannot access this module.\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module Defective \/ Internal failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module J492 (AWD): No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – N373 Haldex Solenoid Valve: Electrical fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC1112\u003c\/code\u003e – Haldex Clutch Pump: Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC1113\u003c\/code\u003e – AWD Clutch: Mechanical failure \/ No engagement\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eU0114\u003c\/code\u003e – Lost Communication with AWD Control Module\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16670\u003c\/code\u003e – All-Wheel Drive C1113 07: Mechanical Failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16671\u003c\/code\u003e – Haldex Clutch Pump C1112 04: Internal System Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16668\u003c\/code\u003e – Haldex Pump C1112 07: Mechanical Failure Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16666\u003c\/code\u003e – Haldex Pump C1112 13: Open Circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS light\u003c\/code\u003e – AWD system disabled, traction control affected\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – Module fails to respond to scan tool\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n Use a professional VAG-compatible scan tool (VCDS, ODIS, VCP) to read AWD module faults. Basic OBD2 readers and phone apps typically cannot communicate with the Haldex AWD controller (module address 22). Always scan module 22 specifically for accurate fault diagnosis. If the module shows \"No Communication\", check fuses, CAN-bus wiring and ground points before replacing the unit.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- INSTALLATION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit on the rear differential \/ Haldex coupling housing\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the mounting bolts\u003c\/li\u003e\n \u003cli\u003eCarefully detach the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003eFit the replacement unit and secure all mounting points to correct torque\u003c\/li\u003e\n \u003cli\u003eReconnect the electrical connector and verify a secure fit\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform Pump Learn \/ Basic Settings calibration (engine must be running)\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and take a test drive to verify AWD operation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003ePump Learn – Required After Every Installation\u003c\/h3\u003e\n \u003cp\u003eThe Pump Learn calibration is a mandatory step whenever a Haldex control unit is replaced. Without it, the unit will not supply correct power to the pump, resulting in no AWD engagement. Use VCDS or ODIS, navigate to module \u003cstrong\u003e22 AWD → Basic Settings → Pump Motor calibration\u003c\/strong\u003e. The procedure takes approximately 1 minute with the engine running.\u003c\/p\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Support Included\u003c\/strong\u003e\n If the module requires coding or you need assistance with the Pump Learn procedure, we provide online technical support. Contact us via the button below or email \u003cstrong\u003einfo@cars-ecu.com\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003e\n\u003cstrong\u003eReplace the N373 Haldex solenoid valve\u003c\/strong\u003e – highly recommended when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil (Gen 2 fluid) and clean the pump gauze strainer\u003c\/li\u003e\n \u003cli\u003eInspect the electrical connector for corrosion or damaged pins\u003c\/li\u003e\n \u003cli\u003eVerify both 12V power supply fuses for the Haldex system\u003c\/li\u003e\n \u003cli\u003eCheck CAN-bus wiring to ABS\/ESP module for continuity\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes after installation and test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- WHY HALDEX UNITS FAIL --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is mounted on the rear differential in an exposed undercarriage location. Moisture and road water can penetrate the housing over time, corroding the internal circuit board and causing communication failures or complete unit shutdown.\u003c\/p\u003e\n\n \u003ch3\u003e2. N373 Solenoid Valve Damage\u003c\/h3\u003e\n \u003cp\u003eThe N373 Haldex solenoid valve controls oil flow to the clutch pack. A failed or electrically faulty N373 valve sends abnormal current signals back to the control unit, which can trigger fault codes and, in severe cases, damage the ECU's internal driver circuits.\u003c\/p\u003e\n\n \u003ch3\u003e3. Pump Calibration Data Corruption\u003c\/h3\u003e\n \u003cp\u003eThe internal memory stores learned pump calibration values. A failing or blocked pump causes incorrect data to be written to the calibration table. Once these values drift outside acceptable limits, the unit triggers fault codes and disables AWD engagement.\u003c\/p\u003e\n\n \u003ch3\u003e4. Heat \u0026amp; Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eRepeated AWD engagement cycles under load generate heat that degrades solder joints and electronic components within the control unit over extended service life – especially on high-mileage T5 Transporters used for commercial purposes.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Prevention – Recommended Service Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eChange Haldex Gen 2 oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eClean pump gauze strainer during each oil service\u003c\/li\u003e\n \u003cli\u003eInspect N373 solenoid valve every 80,000 km or at first fault\u003c\/li\u003e\n \u003cli\u003eInspect the wiring harness and connector regularly for corrosion\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- QUALITY \u0026 WARRANTY --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is backed by a 12-month warranty covering all functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD \/ ABS \/ ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve driver circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage caused by incorrect installation, failure to perform Pump Learn calibration, incompatible vehicle fitment, external electrical faults (blown fuses, damaged wiring), or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ It is strongly recommended to replace the N373 Haldex solenoid valve and Haldex oil when fitting this control unit.\u003c\/strong\u003e\n A faulty N373 valve is one of the most common causes of control unit damage. Fresh oil protects the new unit and ensures accurate pump calibration. Use only approved Haldex Gen 2 fluid.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- SHIPPING --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eShipping\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWorldwide Shipping\u003c\/strong\u003e – We ship to most countries globally. If your country is not available at checkout, please contact us directly and we will process the order personally.\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eSecurely packaged to prevent damage in transit\u003c\/li\u003e\n \u003cli\u003eTracking number provided for all shipments\u003c\/li\u003e\n \u003cli\u003eExpress options available – contact us for details\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003c!-- CONTACT --\u003e\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eNeed Help or Have a Question?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is available to assist with compatibility checks, coding guidance, and Pump Learn support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003c!-- IMPORTANT PURCHASE INFORMATION --\u003e\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePart Number Verification:\u003c\/strong\u003e Confirm the part number on your existing unit matches 7H0907554D or the listed compatible codes before ordering\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eNOT Compatible With:\u003c\/strong\u003e 1K0907554 series (Golf, Passat, Tiguan 4Motion) – different generation and connector type\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePump Learn Required:\u003c\/strong\u003e Always perform the Pump Learn calibration after installation – this step is mandatory for correct AWD operation\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eN373 Valve:\u003c\/strong\u003e It is strongly recommended to replace the N373 Haldex solenoid valve at the same time\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eHaldex Oil:\u003c\/strong\u003e Replace Haldex Gen 2 fluid during installation for best results and to protect the replacement unit\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003ePhotos:\u003c\/strong\u003e Product photos are for illustrative purposes only – actual unit may vary in appearance\u003c\/li\u003e\n \u003cli style=\"margin-top: 10px;\"\u003e\n\u003cstrong style=\"color: #E3FC02;\"\u003eOnline Support:\u003c\/strong\u003e Contact us at info@cars-ecu.com for coding assistance or technical questions\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© 2024 Cars-ECU.com | Professional Automotive Electronics\u003c\/p\u003e\n \u003cp style=\"margin-top: 10px;\"\u003eAll trademarks and brand names are property of their respective owners\u003c\/p\u003e\n \u003c\/footer\u003e\n\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52461832208717,"sku":null,"price":489.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0ay907554h-refurbished","title":"0AY907554H Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554H Haldex Control Unit 4th Gen. Fully restored, tested \u0026amp; functional, 12-month warranty. Continental OEM. Fits VW Golf, Tiguan, Sharan, Audi A3, TT, Skoda Octavia, Superb, Seat AWD.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554H, 0AY598554H, Haldex control unit, 4th generation Haldex, AWD control unit, Continental, VW Tiguan, Golf, Audi A3, TT, Skoda Octavia\"\u003e\n \u003ctitle\u003e0AY907554H Haldex Control Unit 4th Gen AWD | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554H – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554H\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Continental – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Refurbished – New Cover \u0026amp; Silicone Sealing Applied\u003c\/strong\u003e\n Each unit is fully restored with a new cover and new silicone sealing, providing durability comparable to a new module. Bench-tested prior to dispatch and fully operational for direct installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554H  •  0AY598554H  •  HAP542  •  5WP33532  •  0AY 907 554 H\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B  •  0AY907554C  •  0AY907554D  •  0AY907554E  •  0AY598554  •  0AY598554A  •  0AY598554B  •  0AY598554C  •  0AY598554D  •  0AY598544\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0044\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – New Cover \u0026amp; Silicone, Tested \u0026amp; Verified\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Continental Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554H\u003c\/strong\u003e. The unit has been fully restored with a new cover and new silicone sealing, then bench-tested to ensure functionality equivalent to a new module. It manages the rear AWD coupling system, controlling the engagement and pressure of the rear differential clutch pack based on driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0AY907554H is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the refurbished control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52462110146893,"sku":null,"price":339.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_6f237bf8-5b60-4def-98ad-049e0f03750d.jpg?v=1741337565"},{"product_id":"haldex-control-unit-0bs907554c","title":"0BS907554C Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0BS907554C Haldex Control Unit 4th Gen. Tested \u0026amp; functional, 12-month warranty. Continental OEM. Fits VW Golf, Tiguan, Passat, Sharan, Audi Q3, Skoda Octavia, Superb, Seat Alhambra AWD.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BS907554C, 0BS598554C, Haldex control unit, 4th generation Haldex, AWD control unit, Continental, VW Tiguan, Passat, Audi Q3, Skoda Octavia, Superb\"\u003e\n \u003ctitle\u003e0BS907554C Haldex Control Unit 4th Gen AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0BS907554C – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BS907554C\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Continental – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control unit is bench-tested prior to dispatch to verify full functionality. Used condition, fully operational and ready for direct installation into compatible AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BS907554C  •  0BS598554C  •  HAP542  •  5WP33524-04  •  0BS 907 554 C\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0BS907554  •  0BS907554A  •  0BS907554B  •  0BS598554  •  0BS598554A  •  0BS598554B  •  5WP33524  •  5WP33524-01  •  5WP33524-02  •  5WP33524-03\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 4016\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Continental Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BS907554C\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system, responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"3b52555d547b585a4948165e584e15585456\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0BS907554C is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"3b52555d547b585a4948165e584e15585456\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the used control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52475613872461,"sku":null,"price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"haldex-control-unit-0br907554a","title":"0BR907554A Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0BR907554A Haldex Control Unit 4th Gen. Tested \u0026amp; functional, 12-month warranty. Continental OEM. Fits VW Golf, Tiguan, Passat, Sharan, Audi A3, S3, TT, Skoda Octavia, Superb, Yeti, Seat AWD.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0BR907554A, 0BR598554A, Haldex control unit, 4th generation Haldex, AWD control unit, Continental, VW Golf, Tiguan, Audi A3, S3, TT, Skoda Octavia\"\u003e\n \u003ctitle\u003e0BR907554A Haldex Control Unit 4th Gen AWD | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0BR907554A – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0BR907554A\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Continental – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Continental (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control unit is bench-tested prior to dispatch to verify full functionality. Used condition, fully operational and ready for direct installation into compatible AWD vehicles.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0BR907554A  •  0BR598554A  •  HAP542  •  5WP33523-02  •  0BR 907 554 A\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0BR907554  •  0BR598554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H43\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 3016\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eContinental\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original Continental Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0BR907554A\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system, responsible for activating and regulating the rear differential clutch pack in response to traction demands and driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f29b9c949db291938081df979187dc919d9f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0BR907554A is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eGolf 4Motion\u003c\/li\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003ePassat 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eA3 Quattro\u003c\/li\u003e\n \u003cli\u003eS3 Quattro\u003c\/li\u003e\n \u003cli\u003eTT Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eYeti 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAltea 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f29b9c949db291938081df979187dc919d9f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the used control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Continental","offers":[{"title":"Default Title","offer_id":52475651522893,"sku":null,"price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/www.cars-ecu.com_5.png?v=1745839182"},{"product_id":"bmw-rear-differential-control-module-33108692605-01","title":"33108692605-01 BMW Rear Differential Control Module Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used BMW Rear Differential Control Module 33108692605-01. Tested \u0026amp; functional, 12-month warranty. OEM original. Fits BMW X1, X2, 228i xDrive 4x4 models (2014–2022).\"\u003e\n \u003cmeta name=\"keywords\" content=\"33108692605, BMW rear differential, xDrive control module, BMW X1, X2, 228i, 4x4 ECU, 8692605, 2004967\"\u003e\n \u003ctitle\u003eBMW Rear Differential Control Module 33108692605-01 | Used OEM | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed BMW Rear Differential Control Module – 33108692605-01\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 33108692605-01\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOEM Original – Rear Differential \/ xDrive 4x4 Control Module for BMW\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n BMW Rear Differential \/ xDrive 4x4\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eQuality\u003c\/strong\u003e\n Original OEM – Not Aftermarket\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each control module is individually tested prior to dispatch to verify full functionality. Used condition, fully operational and ready for direct plug-and-play installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e33108692605-01  •  8692605  •  2004967  •  1035354189\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing control module and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eBMW Rear Differential \/ xDrive 4x4 Control Module\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential ECU\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eBMW xDrive \/ 4x4 models (c. 2014–2022)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eQuality:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eOriginal OEM – Not Aftermarket\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eUsed – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used OEM BMW rear differential control module with part number \u003cstrong style=\"color: #E3FC02;\"\u003e33108692605-01\u003c\/strong\u003e. It is a critical component of the BMW xDrive \/ 4x4 system, responsible for regulating torque distribution between the rear wheels to improve traction, stability and performance under varying driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Module Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eRegulates torque distribution between the rear wheels for optimal traction\u003c\/li\u003e\n \u003cli\u003eControls differential locking and unlocking based on driving conditions\u003c\/li\u003e\n \u003cli\u003eCommunicates with the ABS, DSC (Dynamic Stability Control) and engine management systems\u003c\/li\u003e\n \u003cli\u003eImproves vehicle stability and performance under load and cornering\u003c\/li\u003e\n \u003cli\u003ePrevents wheel slippage by actively managing rear axle torque split\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Direct OEM Replacement – Plug \u0026amp; Play\u003c\/strong\u003e\n This module is a direct OEM replacement requiring no modifications. It connects directly to the existing wiring harness and mounts in the original position.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 33108692605-01 is compatible with the following BMW vehicles. Always verify the part number on your existing module before ordering:\u003c\/p\u003e\n\n \u003ch3\u003eBMW\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eBMW X1 xDrive (2014 – 2022)\u003c\/li\u003e\n \u003cli\u003eBMW X2 xDrive (2014 – 2022)\u003c\/li\u003e\n \u003cli\u003eBMW 228i xDrive 4x4 (2014 – 2022)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this module fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Symptoms of a Faulty Module\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective BMW rear differential control module commonly causes the following issues:\u003c\/p\u003e\n\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLoss of 4x4 \/ xDrive functionality – vehicle behaves as front-wheel drive only\u003c\/li\u003e\n \u003cli\u003eDifferential locking failure or uncontrolled slippage between rear wheels\u003c\/li\u003e\n \u003cli\u003eTorque variation or unexpected power distribution during acceleration\u003c\/li\u003e\n \u003cli\u003eAWD \/ 4x4 warning light illuminated on dashboard\u003c\/li\u003e\n \u003cli\u003eDSC \/ stability control warning lights on dashboard\u003c\/li\u003e\n \u003cli\u003eFault codes stored in the rear differential or xDrive control module\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A BMW-compatible diagnostic tool (ISTA, INPA, or equivalent) is required to read rear differential module fault codes. Standard OBD2 readers typically cannot access this module. Always scan the rear differential module directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the rear differential control module on the rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old module\u003c\/li\u003e\n \u003cli\u003ePosition the replacement module and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect the electrical connector and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a BMW-compatible diagnostic tool and code\/adapt the module if required\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm xDrive \/ 4x4 engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f59c9b939ab596948786d8909680db969a98\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Rear Differential Control Modules Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe module is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of 4x4 function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eBlown fuses, corroded pins, or damaged wiring in the rear differential circuit are a common cause of module failure, often presenting without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eRepeated high-load driving, aggressive cornering or extended xDrive engagement can generate excessive heat that degrades solder joints and internal electronic components within the module over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Physical Damage\u003c\/h3\u003e\n \u003cp\u003eImpact damage from road debris or during off-road use can physically damage the module housing or internal components, leading to intermittent or permanent failure.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used BMW rear differential control module has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control module malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with xDrive, ABS or DSC modules\u003c\/li\u003e\n \u003cli\u003eTorque regulation and differential control failures\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eCoding or adaptation may be required after installation – online support is included\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used OEM Automotive Electronics | BMW Rear Differential Control Modules\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":52587849580877,"sku":null,"price":249.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/photo_2025-10-15_11-12-54.jpg?v=1760519596"},{"product_id":"haldex-control-unit-volvo-5wp22220-02","title":"5WP22220-02 Haldex control unit Volvo Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 5WP22220-02 Haldex Control Unit Gen 2\/3 for Volvo AWD. Fully restored, tested \u0026amp; functional, 12-month warranty. Siemens original. Fits Volvo V70, XC70, XC90 AWD systems.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP22220-02, 5WP2222002, Haldex control unit, Volvo AWD, Gen 2, Gen 3, Siemens, Volvo XC90, XC70, V70, 30759701\"\u003e\n \u003ctitle\u003e5WP22220-02 Haldex Control Unit Volvo AWD Gen 2\/3 | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 5WP22220-02 – Volvo AWD Gen 2\/3\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP22220-02\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for Volvo AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 2 \/ Gen 3\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Refurbished – Fully Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each unit is fully restored and bench-tested prior to dispatch. Fully operational and ready for direct installation to restore complete all-wheel-drive performance.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP2220-02  •  5WP2222002  •  5WP22220  •  107861-01  •  30759701  •  HAP511\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd \/ 3rd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSiemens Reference:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eVolvo Part Number:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e30759701\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolvo AWD\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex Gen 2\/3 control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP22220-02\u003c\/strong\u003e, designed specifically for Volvo AWD systems. It functions as the electronic management module of the rear AWD coupling, responsible for activating and regulating torque distribution to the rear axle for optimal traction in all driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f29b9c949db291938081df979187dc919d9f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 5WP22220-02 is compatible with the following Volvo vehicles equipped with Haldex Gen 2\/3 AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eV70 AWD\u003c\/li\u003e\n \u003cli\u003eXC70 AWD\u003c\/li\u003e\n \u003cli\u003eXC90 AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A compatible diagnostic tool is required to read Haldex AWD fault codes. After replacing the control unit, clear all stored fault codes and perform a test drive to confirm AWD engagement. If dashboard warning lights (ESP\/ABS) remain after replacement, check the N373 valve and wiring connector for corrosion.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eCode the unit to the vehicle if required using compatible diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"f29b9c949db291938081df979187dc919d9f\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eInspect and replace the N373 control valve if worn or faulty\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the refurbished control unit and ensure correct AWD operation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52633550684493,"sku":null,"price":319.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_bf84bdec-a49e-464b-8ffb-faf24c63f52c.jpg?v=1741337331"},{"product_id":"haldex-control-unit-volvo-5wp22228-04","title":"5WP22228-04 Haldex control unit Volvo Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 5WP22228-04 Haldex Control Unit Gen 2\/3 for Volvo AWD. Fully restored, tested \u0026amp; functional, 12-month warranty. Siemens original. Fits Volvo V70, XC70, XC90 AWD systems.\"\u003e\n \u003cmeta name=\"keywords\" content=\"5WP22228-04, 5WP2222804, Haldex control unit, Volvo AWD, Gen 2, Gen 3, Siemens, Volvo XC90, XC70, V70\"\u003e\n \u003ctitle\u003e5WP22228-04 Haldex Control Unit Volvo AWD Gen 2\/3 | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 5WP22228-04 – Volvo AWD Gen 2\/3\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 5WP22228-04\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for Volvo AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD Gen 2 \/ Gen 3\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Refurbished – Fully Tested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Each unit is fully restored and bench-tested prior to dispatch. Fully operational and ready for direct installation to restore complete all-wheel-drive performance.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e5WP2228-04  •  5WP2222804  •  5WP22228  •  107863-02  •  HAP511\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 2nd \/ 3rd Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSiemens Reference:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHAP511\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVolvo AWD\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – Tested \u0026amp; Verified Working\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex Gen 2\/3 control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e5WP22228-04\u003c\/strong\u003e, designed specifically for Volvo AWD systems. It functions as the electronic management module of the rear AWD coupling, responsible for activating and regulating torque distribution to the rear axle for optimal traction in all driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"2c45424a436c4f4d5e5f01494f59024f4341\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e \n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 5WP22228-04 is compatible with the following Volvo vehicles equipped with Haldex Gen 2\/3 AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolvo\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eV70 AWD\u003c\/li\u003e\n \u003cli\u003eXC70 AWD\u003c\/li\u003e\n \u003cli\u003eXC90 AWD\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD Control Module: No Communication\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A compatible diagnostic tool is required to read Haldex AWD fault codes. After replacing the control unit, clear all stored fault codes and perform a test drive to confirm AWD engagement. If dashboard warning lights (ESP\/ABS) remain after replacement, check the N373 valve and wiring connector for corrosion.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eCode the unit to the vehicle if required using compatible diagnostic equipment\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"2c45424a436c4f4d5e5f01494f59024f4341\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e.\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eInspect and replace the N373 control valve if worn or faulty\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the refurbished control unit and ensure correct AWD operation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52634168590669,"sku":null,"price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_bf84bdec-a49e-464b-8ffb-faf24c63f52c.jpg?v=1741337331"},{"product_id":"haldex-control-unit-0ay907554b-refurbished","title":"0AY907554B Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554B Haldex Control Unit 4th Gen. Fully restored, tested \u0026amp; functional, 12-month warranty. Siemens original. Fits VW Tiguan, Sharan, Audi Q3, Skoda Octavia, Superb, Seat Alhambra AWD.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554B, Haldex control unit, 4th generation Haldex, AWD control unit, rear differential module, Siemens, VW Tiguan, Sharan, Audi Q3, Skoda Octavia\"\u003e\n \u003ctitle\u003e0AY907554B Haldex Control Unit 4th Gen AWD | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554B – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554B\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Refurbished – New Silicone Sealing Applied\u003c\/strong\u003e\n Each unit is fully restored, resealed with new silicone for durability comparable to a new module, and bench-tested prior to dispatch. Fully operational and ready for direct installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCompatible OEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554B  •  HAP542  •  5WP33514-03  •  0AY 907 554 B\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0AY907554  •  0AY907554A  •  0AY907554B\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H41\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0039\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – New Silicone, Tested \u0026amp; Verified\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554B\u003c\/strong\u003e. The unit has been fully restored, resealed with new silicone, and bench-tested to ensure functionality equivalent to a new module. It manages the rear AWD coupling system, controlling the engagement and pressure of the rear differential clutch pack based on driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"e881868e87a88b899a9bc58d8b9dc68b8785\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0AY907554B is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"e881868e87a88b899a9bc58d8b9dc68b8785\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the refurbished control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003cbr\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used \u0026amp; Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52792518443341,"sku":null,"price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_6f237bf8-5b60-4def-98ad-049e0f03750d.jpg?v=1741337565"},{"product_id":"haldex-control-unit-0ay907554a-refurbished","title":"0AY907554A Haldex control unit Refurbished","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Refurbished 0AY907554A Haldex Control Unit 4th Gen. Fully restored, tested \u0026amp; functional, 12-month warranty. Siemens original. Fits VW Tiguan, Sharan, Audi Q3, Skoda Octavia, Superb, Seat Alhambra AWD.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0AY907554A, Haldex control unit, 4th generation Haldex, AWD control unit, rear differential module, Siemens, VW Tiguan, Sharan, Audi Q3, Skoda Octavia\"\u003e\n \u003ctitle\u003e0AY907554A Haldex Control Unit 4th Gen AWD | Refurbished | Cars-ECU.com\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .info-section p, .info-section ul, .info-section li { color: #ffffff; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .info-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .info-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #1a1a1a; padding: 10px; border-radius: 3px; color: #ffffff; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .spec-label { border-bottom: none; border-radius: 3px 3px 0 0; }\n .spec-value { border-radius: 0 0 3px 3px; margin-bottom: 10px; }\n }\n .btn-contact { display: inline-block; background-color: #000000; color: #E3FC02 !important; padding: 14px 36px; text-decoration: none; border-radius: 5px; font-weight: 700; font-size: 1em; margin-top: 20px; transition: all 0.3s; border: 2px solid #E3FC02; }\n .btn-contact:hover { background-color: #E3FC02; color: #000000 !important; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; column-count: 2; column-gap: 20px; }\n .fault-codes li { padding: 5px 0; font-size: 0.9em; color: #ffffff; break-inside: avoid; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n @media (max-width: 768px) { .fault-codes ul { column-count: 1; } }\n footer { text-align: center; padding: 20px; color: #b0b0b0; font-size: 0.9em; margin-top: 30px; border-top: 1px solid #E3FC02; }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eRefurbished Haldex Control Unit 0AY907554A – 4th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0AY907554A\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.1em; color: #ffffff;\"\u003eOriginal Siemens – Rear Differential Control Module for VAG AWD Vehicles\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 4th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Refurbished – Fully Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n Siemens (Original OEM)\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003e✓ Refurbished – New Silicone Sealing Applied\u003c\/strong\u003e\n Each unit is fully restored, resealed with new silicone for durability comparable to a new module, and bench-tested prior to dispatch. Fully operational and ready for direct installation.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCompatible OEM Part Numbers\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0AY907554A  •  HAP542  •  5WP33514-02  •  0AY 907 554 A\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\" style=\"margin-top: 10px;\"\u003e\n \u003cstrong\u003eAlso Compatible With:\u003c\/strong\u003e\n \u003cp\u003e0AY907554\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003e⚠️ Always Verify Your Part Number\u003c\/strong\u003e\n Before placing an order, check the part number printed directly on your existing Haldex control unit and confirm it corresponds to one of the reference numbers listed above. If you are unsure about compatibility, contact us – we are happy to assist.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHaldex AWD 4th Generation\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eHW H41\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSW 0036\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eSiemens\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eVAG Group – VW, Audi, Škoda, SEAT\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003eRefurbished – New Silicone, Tested \u0026amp; Verified\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cdiv class=\"spec-label\"\u003eWarranty Period:\u003c\/div\u003e\n \u003cdiv class=\"spec-value\"\u003e12 Months\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a refurbished original Siemens Haldex 4th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0AY907554A\u003c\/strong\u003e. The unit has been fully restored, resealed with new silicone, and bench-tested to ensure functionality equivalent to a new module. It manages the rear AWD coupling system, controlling the engagement and pressure of the rear differential clutch pack based on driving conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eMonitors rotational speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump pressure for rear differential clutch engagement\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive distribution automatically when traction is required\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management modules\u003c\/li\u003e\n \u003cli\u003eManages the N373 Haldex control valve for clutch pressure regulation\u003c\/li\u003e\n \u003cli\u003eProtects the coupling system from thermal overload\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eℹ️ Coding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit may require coding to the vehicle using VCDS or compatible VAG diagnostic equipment. Online coding support is included with your purchase – contact us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"e881868e87a88b899a9bc58d8b9dc68b8785\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eThe 0AY907554A is compatible with the following VAG group vehicles equipped with Haldex 4th generation AWD systems. Always verify the part number on your existing unit:\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eTiguan 4Motion\u003c\/li\u003e\n \u003cli\u003eSharan 4Motion\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eQ3 Quattro\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSuperb 4x4\u003c\/li\u003e\n \u003cli\u003eOctavia 4x4\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAlhambra 4Drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003e✓ Not Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this unit fits your vehicle, send us your VIN number or the part number from your existing unit. We will confirm compatibility before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 15px;\"\u003eA defective Haldex 4th gen control unit commonly triggers one or more of the following fault codes:\u003c\/p\u003e\n\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – AWD Control Module (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00448\u003c\/code\u003e – Haldex Clutch Pump: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e02248\u003c\/code\u003e – Haldex Control Valve N373: Electrical Fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory – Intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e00003\u003c\/code\u003e – Control Module: Faulty\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16347\u003c\/code\u003e – EEPROM: Memory Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e65535\u003c\/code\u003e – Control Module: Memory \/ Checksum Error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e (U0114) – AWD Control Unit: No Communication\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Diagnostic Tip\u003c\/strong\u003e\n A professional VAG-compatible scan tool (VCDS, ODIS, VCP) is required to read AWD module faults. Standard OBD2 readers typically cannot communicate with the Haldex AWD controller. Always scan module 22 directly for accurate fault diagnosis.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eLocate the Haldex control unit mounted on the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove all mounting fasteners\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003ePosition the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and verify secure fitment\u003c\/li\u003e\n \u003cli\u003eConnect a VAG-compatible diagnostic tool and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes and perform a test drive\u003c\/li\u003e\n \u003cli\u003eConfirm AWD engagement using the diagnostic tool after the test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"success-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e✓ Online Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team is available to help. Reach us via the contact button below or at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"e881868e87a88b899a9bc58d8b9dc68b8785\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eRecommended Maintenance at Time of Installation\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex control valve N373 at the same time as fitting the new control unit\u003c\/li\u003e\n \u003cli\u003eReplace Haldex oil when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eInspect the wiring connector and harness for corrosion or damage\u003c\/li\u003e\n \u003cli\u003eCheck AWD system fuses dedicated to the Haldex circuit\u003c\/li\u003e\n \u003cli\u003eClear all stored diagnostic fault codes after installation and perform a test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is located near the rear axle in an exposed position. Over time, moisture can penetrate the housing, corroding the internal circuit board and causing communication failures or complete loss of AWD function.\u003c\/p\u003e\n\n \u003ch3\u003e2. Power Supply Faults\u003c\/h3\u003e\n \u003cp\u003eThe Gen 4 Haldex system relies on dedicated 12V supply lines protected by fuses. Blown fuses, corroded pins, or damaged wiring at the rear connector are a common cause of total AWD loss, often without an obvious dashboard warning.\u003c\/p\u003e\n\n \u003ch3\u003e3. Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eExtended high-load driving or repeated AWD engagement can generate excessive heat that degrades solder joints and internal electronic components within the control unit over time.\u003c\/p\u003e\n\n \u003ch3\u003e4. Neglected Haldex Oil\u003c\/h3\u003e\n \u003cp\u003eOld or contaminated Haldex fluid leaves deposits that clog internal hydraulic passages and accelerate wear on the pump and N373 valve, leading to incorrect control unit readings and eventual AWD failure.\u003c\/p\u003e\n\n \u003cdiv class=\"warning-box\" style=\"margin-top: 20px;\"\u003e\n \u003cstrong\u003e⚠️ Recommended Maintenance Intervals\u003c\/strong\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eReplace Haldex oil every 40,000 – 60,000 km\u003c\/li\u003e\n \u003cli\u003eInspect and replace N373 control valve at each oil service if worn\u003c\/li\u003e\n \u003cli\u003eInspect rear wiring harness and connector block annually\u003c\/li\u003e\n \u003cli\u003eScan AWD module 22 if any dashboard warning lights appear\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n\n \u003cp\u003e\u003cstrong style=\"color: #E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This refurbished Haldex control unit has been fully tested and is covered by a 12-month warranty against functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Coverage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.8;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD, ABS or ESP modules\u003c\/li\u003e\n \u003cli\u003eN373 valve control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration memory errors\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 15px;\"\u003e\u003cstrong style=\"color: #E3FC02;\"\u003eWarranty Exclusions:\u003c\/strong\u003e Damage resulting from incorrect installation, incompatible vehicle fitment, external electrical faults, or physical damage during handling.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\" style=\"margin-top: 15px;\"\u003e\n \u003cstrong\u003eℹ️ Recommendation: Replace Haldex Oil \u0026amp; N373 Valve When Fitting This Unit\u003c\/strong\u003e\n Fresh Haldex fluid and a new N373 control valve protect the refurbished control unit and ensure correct AWD operation. \u003ca href=\"https:\/\/cars-ecu.com\/products\/original-oil-for-haldex-2-5-gen\" style=\"color: #E3FC02;\"\u003eOrder Haldex Oil →\u003c\/a\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\" style=\"text-align: center;\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp style=\"margin-bottom: 10px;\"\u003eOur technical team is ready to assist with compatibility checks, installation guidance, and coding support.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.8;\"\u003e\n \u003cli\u003ePlease verify this part fits your specific vehicle before placing an order\u003c\/li\u003e\n \u003cli\u003ePhotos are for illustrative purposes only – the actual unit may differ in appearance\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping available (if your country is not listed at checkout, contact us for personal processing)\u003c\/li\u003e\n \u003cli\u003eIt is recommended to replace Haldex oil and N373 valve when replacing the control unit\u003c\/li\u003e\n \u003cli\u003eOnline support is included in case the module requires coding after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cfooter\u003e\n \u003cp\u003e© Cars-ECU.com | Used \u0026amp; Refurbished OEM Automotive Electronics | Haldex AWD Control Units\u003c\/p\u003e\n \u003c\/footer\u003e\n\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52792565367117,"sku":null,"price":329.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/IMG-6945_6f237bf8-5b60-4def-98ad-049e0f03750d.jpg?v=1741337565"},{"product_id":"haldex-control-unit-0cq907554h","title":"Haldex control unit 0CQ907554H","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0CQ907554H Haldex control unit for VAG AWD vehicles. BorgWarner Gen 5 rear differential module, HW H52 \/ 2001599, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0CQ907554H, Haldex control unit, BorgWarner, Haldex Gen 5, HW H52, 2001599, Golf VII R, Passat B8 Alltrack, Tiguan AD, Audi A3 8V, Q3 8U, Octavia III 4x4, Ateca, Tarraco\"\u003e\n \u003ctitle\u003e0CQ907554H Haldex Control Unit Gen 5 | Used BorgWarner OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0CQ907554H – VAG AWD Gen 5\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0CQ907554H\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal BorgWarner rear differential control module for Volkswagen Group vehicles equipped with 5th generation Haldex AWD system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eOEM Number\u003c\/strong\u003e\n 0CQ907554H\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eHardware Reference\u003c\/strong\u003e\n HW H52 \/ 2001599\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eOriginal Used OEM Module\u003c\/strong\u003e\n Tested BorgWarner Haldex control unit prepared as a reliable replacement for failed Gen 5 AWD modules. Designed to restore rear axle engagement, stable traction control and proper communication with vehicle AWD electronics.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554H\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eHardware \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHW H52  •  2001599  •  BorgWarner\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number printed on your original Haldex ECU with the number listed above. If you are unsure about fitment, contact us before purchase and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOEM Number:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e0CQ907554H\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eH52\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eModule Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2001599\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 5th generation Haldex system\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed \/ Tested \/ Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis used original Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554H\u003c\/strong\u003e is designed for 5th generation Haldex AWD systems in Volkswagen Group vehicles. It is a core BorgWarner module responsible for managing torque transfer between the front and rear axles, helping the vehicle maintain correct traction, stability and AWD engagement.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear axle engagement in Gen 5 Haldex AWD systems\u003c\/li\u003e\n \u003cli\u003eSupports communication with ABS, ESP and drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore AWD performance when the original ECU has failed\u003c\/li\u003e\n \u003cli\u003eProvides a cost-effective OEM replacement for faulty rear differential modules\u003c\/li\u003e\n \u003cli\u003eSupports stable vehicle traction in changing road conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eTypical failure symptoms include loss of rear-wheel drive, no communication with the AWD module, intermittent fault logging and ESP \/ ABS warning lights. This unit is supplied as a tested used OEM module ready for installation in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is available if coding is required after installation. If you need help with setup or diagnostics, contact us and we will guide you through the next steps.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex ECU is suitable for selected Volkswagen Group vehicles equipped with a 5th generation Haldex AWD system. Always verify the exact part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Golf VII Alltrack\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf VII R\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat B8 Alltrack\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan (AD \/ BW)\u003c\/li\u003e\n \u003cli\u003eVolkswagen Arteon\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3 8V Quattro\u003c\/li\u003e\n \u003cli\u003eAudi S3 8V Quattro\u003c\/li\u003e\n \u003cli\u003eAudi Q3 8U\u003c\/li\u003e\n \u003cli\u003eAudi TT \/ TTS (FV \/ 8S)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia III (5E 4x4)\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb III (3V 4x4)\u003c\/li\u003e\n \u003cli\u003eŠkoda Kodiaq\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Ateca\u003c\/li\u003e\n \u003cli\u003eSEAT Tarraco\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this module fits your vehicle, send the VIN number or the printed number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with a defective Haldex control unit can commonly trigger the following symptoms or diagnostic issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding to diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory \/ Intermittent fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights shown on the dashboard\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive \/ AWD not working correctly\u003c\/li\u003e\n \u003cli\u003eIntermittent traction or drivetrain related faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM number on the original control unit before replacement\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old ECU and inspect the connector area for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended During Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace Haldex oil during service\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eCheck for remaining AWD, ESP or ABS faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team can help. Reach us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"71181f171e31121003025c1412045f121e1c\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit is supplied with a 12-month functionality warranty and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified working module functionality before shipping\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eOnline support if coding assistance is needed after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Excludes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, moisture ingress or improper installation\u003c\/li\u003e\n \u003cli\u003eVehicle-side hydraulic, drivetrain or electrical faults unrelated to the ECU itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you are unsure about compatibility, coding or installation, contact our technical team before ordering. We will help you verify the correct part number for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact module number printed on your original unit before ordering.\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available. If your country is not shown at checkout, contact us directly.\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil during installation is recommended.\u003c\/li\u003e\n \u003cli\u003eOnline support is available if the module requires coding assistance after installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Volkswagen","offers":[{"title":"Default Title","offer_id":52952804589901,"sku":null,"price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/0CQ907554H.jpg?v=1765298476"},{"product_id":"haldex-control-unit-0cq907554k-haldex-control-unit-5th-gen-awd","title":"0CQ907554K Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0CQ907554K Haldex control unit for VAG AWD vehicles. BorgWarner Gen 5 rear differential module, SW 7762 \/ HW 55, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0CQ907554K, 0CQ598554A, 0CQ907554C, Haldex control unit, BorgWarner, SW 7762, HW 55, Haldex Gen 5, Audi RS3 8V, TTRS FV, RSQ3, Q2 Quattro\"\u003e\n \u003ctitle\u003e0CQ907554K Haldex Control Unit Gen 5 | Used BorgWarner OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; font-weight: bold; background-color: #E3FC02; color: #000000; display: inline-block; padding: 8px 15px; border-radius: 5px; margin-top: 10px; }\n .info-section { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(227, 252, 2, 0.2); border: 1px solid #E3FC02; color: #ffffff; }\n .info-section h2 { color: #E3FC02; font-size: 1.4em; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid #E3FC02; }\n .info-section h3 { color: #E3FC02; font-size: 1.1em; margin-top: 20px; margin-bottom: 10px; }\n .key-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 15px; margin-bottom: 20px; }\n .feature-box { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; color: #ffffff; }\n .feature-box strong { color: #E3FC02; display: block; margin-bottom: 5px; }\n .oem-numbers { background-color: #2a2a2a; padding: 15px; border-radius: 5px; border-left: 4px solid #E3FC02; margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0CQ907554K – 5th Generation AWD\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0CQ907554K\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal BorgWarner rear differential control module for high-performance VAG vehicles with 5th generation Haldex AWD and Drive Select functionality.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware\u003c\/strong\u003e\n SW 7762 \/ HW 55\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eDrive Select\u003c\/strong\u003e\n Yes\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eTested \u0026amp; Verified Working Unit\u003c\/strong\u003e\n Every control unit is individually tested before dispatch. This unit is supplied as a fully functional OEM replacement for compatible Gen 5 Haldex AWD systems and is ready for installation and coding.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eOEM Reference Numbers:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554K  •  0CQ598554A  •  0CQ907554C  •  0CQ 907 554 K\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eSoftware \/ Hardware References:\u003c\/strong\u003e\n \u003cp\u003eSW 7762  •  HW 55  •  BorgWarner\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eImportant: Verify Before Ordering\u003c\/strong\u003e\n Always check the part number printed directly on your existing Haldex control unit before placing an order. Model year and vehicle type alone are not enough to confirm compatibility because the hardware variant must match.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU \/ RDCM)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSoftware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSW 7762\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHW 55\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDrive Select:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes – supports Drive Select functions\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHigh-performance VAG AWD vehicles with Gen 5 Haldex\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed \/ Tested \/ Verified Working\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis is a genuine used original BorgWarner Haldex 5th generation control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554K\u003c\/strong\u003e. It functions as the electronic management module of the rear AWD coupling system and is responsible for activating and regulating the rear differential clutch pack according to traction demand and selected drive mode.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eMonitors wheel speed differences between front and rear axles\u003c\/li\u003e\n \u003cli\u003eControls the hydraulic pump to build clutch pressure\u003c\/li\u003e\n \u003cli\u003eActivates rear-wheel drive engagement on demand\u003c\/li\u003e\n \u003cli\u003eCommunicates with ABS, ESP and engine management systems\u003c\/li\u003e\n \u003cli\u003eSupports Drive Select functions such as Sport, Comfort and Dynamic modes\u003c\/li\u003e\n \u003cli\u003eManages pump calibration and learned pressure values\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eThe 0CQ907554K variant with \u003cstrong style=\"color: #E3FC02;\"\u003eHW 55\u003c\/strong\u003e and \u003cstrong style=\"color: #E3FC02;\"\u003eSW 7762\u003c\/strong\u003e is intended for high-performance VAG vehicles equipped with Drive Select functionality. Always verify the exact part number on your original unit to ensure correct fitment.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding \u0026amp; Programming Note\u003c\/strong\u003e\n After installation, the control unit must be coded to the vehicle using VCDS, ODIS or equivalent VAG diagnostic software. A Pump Learn function in Basic Settings must also be performed with the engine running so the AWD system can calibrate pump pressure correctly.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe 0CQ907554K is designed for high-performance VAG AWD vehicles with Drive Select functionality. Always verify the part number printed on your current unit before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi RS3 Sportback 8V (2017+)\u003c\/li\u003e\n \u003cli\u003eAudi RS3 Saloon 8V (2017+)\u003c\/li\u003e\n \u003cli\u003eAudi TTRS Coupe \/ Roadster FV (2017+)\u003c\/li\u003e\n \u003cli\u003eAudi TT \/ TTS Coupe \/ Roadster FV (2015+)\u003c\/li\u003e\n \u003cli\u003eAudi Q2 GA Quattro (2017+)\u003c\/li\u003e\n \u003cli\u003eAudi RSQ3 8U (2014–2018)\u003c\/li\u003e\n \u003cli\u003eAudi RSQ3 F3 Sportback (2020+)\u003c\/li\u003e\n \u003cli\u003eAudi A3 \/ S3 Sportback 8V (2017–2020)\u003c\/li\u003e\n \u003cli\u003eAudi A3 Cabriolet 8V (2017–2021)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, please check the part number printed directly on your existing Haldex control unit and confirm it matches this hardware variant. If you are unsure, contact us and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eA faulty Haldex control unit may trigger one or more of the following diagnostic issues or operating symptoms:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e – AWD Control Module: No Communication (U0114 00)\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e131599\u003c\/code\u003e – AWD Clutch Module: C1113 07 intermittent error\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16670\u003c\/code\u003e – All-Wheel Drive: C1113 07 mechanical failure\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16671\u003c\/code\u003e – Haldex Clutch Pump: C1112 04 internal system fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16668\u003c\/code\u003e – Haldex Pump: C1112 07 mechanical failure intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16666\u003c\/code\u003e – Haldex Pump: C1112 13 open circuit\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e16664\u003c\/code\u003e – Haldex Pump: C1112 11 short to ground\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e17460\u003c\/code\u003e – Control module memory checksum error \/ over temperature\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module AWD (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory intermittent\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111307\u003c\/code\u003e – Mechanical malfunction passive \/ sporadic\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eC111204\u003c\/code\u003e – Haldex clutch pump defective\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eDiagnostic Tip\u003c\/strong\u003e\n Use a professional VAG-compatible scan tool such as VCDS, ODIS or VCP to diagnose module 22 AWD directly. Basic OBD readers and phone apps often cannot communicate correctly with the Haldex controller.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Calibration\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eLocate the Haldex unit at the rear differential \/ rear axle assembly\u003c\/li\u003e\n \u003cli\u003eDisconnect the electrical connector and remove the mounting bolts\u003c\/li\u003e\n \u003cli\u003eCarefully detach the old control unit from the coupling housing\u003c\/li\u003e\n \u003cli\u003eFit the replacement unit and secure all mounting points\u003c\/li\u003e\n \u003cli\u003eReconnect all electrical connectors and check for a secure fit\u003c\/li\u003e\n \u003cli\u003eConnect diagnostic equipment and code the unit to the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform the Pump Learn function via Basic Settings with the engine running\u003c\/li\u003e\n \u003cli\u003eTake a short test drive and verify AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003ePump Learn Required After Every Installation\u003c\/h3\u003e\n \u003cp\u003eThe Pump Learn calibration is a mandatory step whenever a Haldex control unit is replaced. Without it, the system may not supply correct power to the pump and AWD engagement may not function properly.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended Maintenance\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace Haldex oil during installation\u003c\/li\u003e\n \u003cli\u003eInspect and clean the pump gauze strainer\u003c\/li\u003e\n \u003cli\u003eCheck the 6-pin connector under the rear seat access area\u003c\/li\u003e\n \u003cli\u003eVerify both 12V supply fuses for the Haldex system\u003c\/li\u003e\n \u003cli\u003eClear all stored fault codes after installation and test drive\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding or you need help with the Pump Learn procedure, our technical team can assist. Reach us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"234a4d454c63404251500e4640560d404c4e\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eWhy Haldex Control Units Fail\u003c\/h2\u003e\n \u003ch3\u003e1. Water Ingress \u0026amp; Corrosion\u003c\/h3\u003e\n \u003cp\u003eThe control unit is mounted in an exposed rear axle area, so moisture and water can eventually damage internal circuit board components and cause communication failures or complete module shutdown.\u003c\/p\u003e\n\n \u003ch3\u003e2. Pump Calibration Data Corruption\u003c\/h3\u003e\n \u003cp\u003eThe module stores learned pump calibration values. A blocked or failing pump can corrupt these values and trigger internal system fault codes, resulting in loss of AWD operation.\u003c\/p\u003e\n\n \u003ch3\u003e3. Voltage Supply Failures\u003c\/h3\u003e\n \u003cp\u003eThe Gen 5 Haldex system uses separate 12V supply lines and fuses. Blown fuses, corroded connectors or damaged wiring can cause total AWD loss even when the module itself is still serviceable.\u003c\/p\u003e\n\n \u003ch3\u003e4. Heat \u0026amp; Thermal Stress\u003c\/h3\u003e\n \u003cp\u003eRepeated heavy AWD engagement, aggressive driving or tuned high-output vehicles can accelerate thermal wear on solder joints and sensitive electronic components.\u003c\/p\u003e\n\n \u003ch3\u003e5. Oil Contamination\u003c\/h3\u003e\n \u003cp\u003eNeglected Haldex oil can leave residue that clogs the pump strainer and internal passages, contributing to false signals, pump overload and incorrect module adaptation values.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit has been fully tested and is backed by a 12-month warranty covering functional defects under normal operating conditions.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Coverage Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eElectronic control unit malfunctions\u003c\/li\u003e\n \u003cli\u003eCommunication failures with AWD \/ ABS modules caused by the unit itself\u003c\/li\u003e\n \u003cli\u003ePump control circuit defects\u003c\/li\u003e\n \u003cli\u003eInternal calibration or memory related faults\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Exclusions\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect installation or failure to perform Pump Learn calibration\u003c\/li\u003e\n \u003cli\u003eIncompatible vehicle fitment or wrong hardware variant ordered\u003c\/li\u003e\n \u003cli\u003eExternal electrical faults or physical damage during handling\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eOur technical team is available to assist with compatibility checks, coding guidance and Pump Learn support before or after purchase.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact Us\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003eConfirm the part number on your existing unit matches 0CQ907554K or the listed compatible references before ordering.\u003c\/li\u003e\n \u003cli\u003eDo not substitute with 0CQ907554J or 0CQ907554H because these are different hardware variants and may not support Drive Select vehicles correctly.\u003c\/li\u003e\n \u003cli\u003ePump Learn calibration must always be performed after installation.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for vehicles requiring advanced VAG diagnostic coding.\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil during installation is strongly recommended.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":53491720094029,"sku":null,"price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/0CQ907554K_ECU.webp?v=1772816619"},{"product_id":"haldex-control-unit-0cq907554h-1","title":"0CQ907554H Haldex control unit Used","description":"\u003cbody\u003e\n\n\n \u003cmeta charset=\"UTF-8\"\u003e\n \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n \u003cmeta name=\"description\" content=\"Used 0CQ907554H Haldex control unit for VAG AWD vehicles. BorgWarner Gen 5 rear differential module, HW H52 \/ 2001599, 12-month warranty.\"\u003e\n \u003cmeta name=\"keywords\" content=\"0CQ907554H, Haldex control unit, BorgWarner, Haldex Gen 5, HW H52, 2001599, Golf VII R, Passat B8 Alltrack, Tiguan AD, Audi A3 8V, Q3 8U, Octavia III 4x4, Ateca, Tarraco\"\u003e\n \u003ctitle\u003e0CQ907554H Haldex Control Unit Gen 5 | Used BorgWarner OEM\u003c\/title\u003e\n \u003cstyle\u003e\n * { margin: 0; padding: 0; box-sizing: border-box; }\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #ffffff; background-color: #000000; }\n .container { max-width: 1200px; margin: 0 auto; padding: 20px; background-color: #000000; }\n .product-header { background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%); color: white; padding: 30px; border-radius: 8px; margin-bottom: 30px; border: 2px solid #E3FC02; }\n .product-header h1 { font-size: 2em; margin-bottom: 10px; font-weight: 600; color: #ffffff; }\n .product-header .part-number { font-size: 1.3em; 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margin-bottom: 20px; }\n .oem-numbers strong { color: #E3FC02; display: block; margin-bottom: 8px; font-size: 1.1em; }\n .oem-numbers p { font-family: 'Courier New', monospace; font-size: 0.95em; line-height: 1.8; color: #ffffff; }\n .compatibility-list { background-color: #1a1a1a; padding: 20px; border-radius: 8px; margin-bottom: 20px; }\n .compatibility-list ul { list-style: none; padding: 0; }\n .compatibility-list li { padding: 10px; margin-bottom: 8px; background-color: #2a2a2a; border-radius: 5px; border-left: 3px solid #E3FC02; color: #ffffff; }\n .compatibility-list li:before { content: \"✓ \"; color: #E3FC02; font-weight: bold; margin-right: 8px; }\n .warning-box, .info-box, .success-box { background-color: #2a2a2a; border: 2px solid #E3FC02; border-radius: 5px; padding: 15px; margin: 20px 0; color: #ffffff; }\n .warning-box strong, .info-box strong, .success-box strong { color: #E3FC02; display: block; margin-bottom: 8px; }\n .technical-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }\n .spec-row { display: contents; }\n .spec-label { background-color: #2a2a2a; padding: 10px; font-weight: 600; color: #E3FC02; border-radius: 3px; }\n .spec-value { background-color: #111111; padding: 10px; border-radius: 3px; color: #ffffff; }\n .fault-codes { background-color: #2a2a2a; padding: 15px; border-radius: 5px; margin-top: 15px; }\n .fault-codes ul { list-style: none; padding: 0; }\n .fault-codes li { padding: 6px 0; color: #ffffff; }\n .fault-codes code { color: #E3FC02; background-color: #1a1a1a; padding: 2px 6px; border-radius: 3px; font-weight: 600; }\n .btn-contact {\n display: flex;\n align-items: center;\n justify-content: center;\n min-width: 220px;\n min-height: 52px;\n background: #000000;\n color: #E3FC02;\n padding: 14px 28px;\n text-decoration: none;\n text-align: center;\n white-space: nowrap;\n line-height: 1.2;\n border-radius: 8px;\n font-weight: 700;\n font-size: 16px;\n margin: 20px auto 0;\n width: fit-content;\n border: 2px solid #E3FC02;\n box-shadow: 0 6px 16px rgba(227, 252, 2, 0.12);\n transition: all 0.22s ease;\n box-sizing: border-box;\n }\n .btn-contact:hover { background: #E3FC02; color: #000000 !important; }\n .questions-help { text-align: center; }\n .questions-help h2 { text-align: center; }\n .questions-help p { text-align: center; max-width: 760px; margin: 0 auto; }\n @media (max-width: 768px) {\n .technical-specs { grid-template-columns: 1fr; }\n .btn-contact { width: 100%; max-width: 320px; }\n }\n \u003c\/style\u003e\n\n\n \u003cdiv class=\"container\"\u003e\n \u003cdiv class=\"product-header\"\u003e\n \u003ch1\u003eUsed Haldex Control Unit 0CQ907554H – VAG AWD Gen 5\u003c\/h1\u003e\n \u003cdiv class=\"part-number\"\u003ePart Number: 0CQ907554H\u003c\/div\u003e\n \u003cp style=\"margin-top: 15px; font-size: 1.08em; color: #ffffff;\"\u003eOriginal BorgWarner rear differential control module for Volkswagen Group vehicles equipped with 5th generation Haldex AWD system.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003cdiv class=\"key-features\"\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eSystem Type\u003c\/strong\u003e\n Haldex AWD 5th Generation\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eCondition\u003c\/strong\u003e\n Used – Fully Tested \u0026amp; Functional\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eManufacturer\u003c\/strong\u003e\n BorgWarner\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eOEM Number\u003c\/strong\u003e\n 0CQ907554H\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eHardware Reference\u003c\/strong\u003e\n HW H52 \/ 2001599\n \u003c\/div\u003e\n \u003cdiv class=\"feature-box\"\u003e\n \u003cstrong\u003eWarranty\u003c\/strong\u003e\n 12 Months\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"success-box\"\u003e\n \u003cstrong\u003eOriginal Used OEM Module\u003c\/strong\u003e\n Tested BorgWarner Haldex control unit prepared as a reliable replacement for failed Gen 5 AWD modules. Designed to restore rear axle engagement, stable traction control and proper communication with vehicle AWD electronics.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eOEM Part Numbers \u0026amp; References\u003c\/h2\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eMain OEM Part Number:\u003c\/strong\u003e\n \u003cp\u003e0CQ907554H\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"oem-numbers\"\u003e\n \u003cstrong\u003eHardware \/ Module References:\u003c\/strong\u003e\n \u003cp\u003eHW H52  •  2001599  •  BorgWarner\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eAlways Verify Your Part Number\u003c\/strong\u003e\n Before ordering, compare the part number printed on your original Haldex ECU with the number listed above. If you are unsure about fitment, contact us before purchase and we will help verify compatibility.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n \u003cdiv class=\"technical-specs\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSystem Type:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHaldex AWD 5th Generation\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eComponent:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRear Differential Control Unit (ECU)\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eManufacturer:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBorgWarner\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOEM Number:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e0CQ907554H\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHardware Version:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eH52\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eModule Ref:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2001599\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eApplication:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eVAG Group AWD vehicles with 5th generation Haldex system\u003c\/div\u003e\n\u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003ePart Condition:\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUsed \/ Tested \/ Functional\u003c\/div\u003e\n\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eProduct Description\u003c\/h2\u003e\n \u003cp\u003eThis used original Haldex control unit with part number \u003cstrong style=\"color: #E3FC02;\"\u003e0CQ907554H\u003c\/strong\u003e is designed for 5th generation Haldex AWD systems in Volkswagen Group vehicles. It is a core BorgWarner module responsible for managing torque transfer between the front and rear axles, helping the vehicle maintain correct traction, stability and AWD engagement.\u003c\/p\u003e\n\n \u003ch3\u003eWhat This Control Unit Does\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; margin-top: 10px; line-height: 1.85;\"\u003e\n \u003cli\u003eControls rear axle engagement in Gen 5 Haldex AWD systems\u003c\/li\u003e\n \u003cli\u003eSupports communication with ABS, ESP and drivetrain electronics\u003c\/li\u003e\n \u003cli\u003eHelps restore AWD performance when the original ECU has failed\u003c\/li\u003e\n \u003cli\u003eProvides a cost-effective OEM replacement for faulty rear differential modules\u003c\/li\u003e\n \u003cli\u003eSupports stable vehicle traction in changing road conditions\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cp style=\"margin-top: 18px;\"\u003eTypical failure symptoms include loss of rear-wheel drive, no communication with the AWD module, intermittent fault logging and ESP \/ ABS warning lights. This unit is supplied as a tested used OEM module ready for installation in compatible vehicles.\u003c\/p\u003e\n\n \u003cdiv class=\"info-box\"\u003e\n \u003cstrong\u003eCoding Support\u003c\/strong\u003e\n Online support is available if coding is required after installation. If you need help with setup or diagnostics, contact us and we will guide you through the next steps.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis Haldex ECU is suitable for selected Volkswagen Group vehicles equipped with a 5th generation Haldex AWD system. Always verify the exact part number on your original module before ordering.\u003c\/p\u003e\n\n \u003ch3\u003eVolkswagen\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eVolkswagen Golf VII Alltrack\u003c\/li\u003e\n \u003cli\u003eVolkswagen Golf VII R\u003c\/li\u003e\n \u003cli\u003eVolkswagen Passat B8 Alltrack\u003c\/li\u003e\n \u003cli\u003eVolkswagen Tiguan (AD \/ BW)\u003c\/li\u003e\n \u003cli\u003eVolkswagen Arteon\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eAudi\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eAudi A3 8V Quattro\u003c\/li\u003e\n \u003cli\u003eAudi S3 8V Quattro\u003c\/li\u003e\n \u003cli\u003eAudi Q3 8U\u003c\/li\u003e\n \u003cli\u003eAudi TT \/ TTS (FV \/ 8S)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eŠkoda\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eŠkoda Octavia III (5E 4x4)\u003c\/li\u003e\n \u003cli\u003eŠkoda Superb III (3V 4x4)\u003c\/li\u003e\n \u003cli\u003eŠkoda Kodiaq\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eSEAT\u003c\/h3\u003e\n \u003cdiv class=\"compatibility-list\"\u003e\n \u003cul\u003e\n \u003cli\u003eSEAT Ateca\u003c\/li\u003e\n \u003cli\u003eSEAT Tarraco\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eNot Sure About Compatibility?\u003c\/strong\u003e\n If you are unsure whether this module fits your vehicle, send the VIN number or the printed number from your existing Haldex ECU and we will help verify fitment before you order.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eCommon Diagnostic Fault Codes \u0026amp; Symptoms\u003c\/h2\u003e\n \u003cp\u003eProblems with a defective Haldex control unit can commonly trigger the following symptoms or diagnostic issues:\u003c\/p\u003e\n \u003cdiv class=\"fault-codes\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003ccode\u003eNo Communication\u003c\/code\u003e – AWD module not responding to diagnostics\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01324\u003c\/code\u003e – Control Module for All Wheel Drive (J492): No Communications\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003e01316\u003c\/code\u003e – ABS Control Module: Check DTC Memory \/ Intermittent fault\u003c\/li\u003e\n \u003cli\u003e\n\u003ccode\u003eESP \/ ABS\u003c\/code\u003e – Warning lights shown on the dashboard\u003c\/li\u003e\n \u003cli\u003eLoss of rear-wheel drive \/ AWD not working correctly\u003c\/li\u003e\n \u003cli\u003eIntermittent traction or drivetrain related faults\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eInstallation \u0026amp; Recommended Service\u003c\/h2\u003e\n \u003ch3\u003eInstallation Steps\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerify the exact OEM number on the original control unit before replacement\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and safely access the rear differential Haldex module\u003c\/li\u003e\n \u003cli\u003eRemove the old ECU and inspect the connector area for moisture or corrosion\u003c\/li\u003e\n \u003cli\u003eInstall the replacement module and reconnect all plugs securely\u003c\/li\u003e\n \u003cli\u003eClear stored fault codes and confirm communication with suitable diagnostics\u003c\/li\u003e\n \u003cli\u003eCarry out coding or adaptation if required by the vehicle\u003c\/li\u003e\n \u003cli\u003ePerform a test drive and confirm correct AWD engagement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eRecommended During Replacement\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eReplace Haldex oil during service\u003c\/li\u003e\n \u003cli\u003eInspect wiring and connector condition\u003c\/li\u003e\n \u003cli\u003eCheck for remaining AWD, ESP or ABS faults after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"warning-box\"\u003e\n \u003cstrong\u003eOnline Technical Support Included\u003c\/strong\u003e\n If the module requires coding assistance after installation, our technical team can help. Reach us at \u003cstrong\u003e\u003ca href=\"\/cdn-cgi\/l\/email-protection\" class=\"__cf_email__\" data-cfemail=\"cda4a3aba28daeacbfbee0a8aeb8e3aea2a0\"\u003e[email protected]\u003c\/a\u003e\u003c\/strong\u003e or use the contact button below.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eQuality Assurance \u0026amp; Warranty\u003c\/h2\u003e\n \u003cp\u003e\u003cstrong style=\"color:#E3FC02;\"\u003e12-Month Warranty:\u003c\/strong\u003e This used Haldex control unit is supplied with a 12-month functionality warranty and is tested before dispatch.\u003c\/p\u003e\n\n \u003ch3\u003eWarranty Includes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eVerified working module functionality before shipping\u003c\/li\u003e\n \u003cli\u003eBasic compatibility guidance before purchase\u003c\/li\u003e\n \u003cli\u003eOnline support if coding assistance is needed after installation\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWarranty Excludes\u003c\/h3\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.85;\"\u003e\n \u003cli\u003eIncorrect part ordering without number verification\u003c\/li\u003e\n \u003cli\u003eDamage caused by wiring faults, moisture ingress or improper installation\u003c\/li\u003e\n \u003cli\u003eVehicle-side hydraulic, drivetrain or electrical faults unrelated to the ECU itself\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section questions-help\"\u003e\n \u003ch2\u003eQuestions or Need Help?\u003c\/h2\u003e\n \u003cp\u003eIf you are unsure about compatibility, coding or installation, contact our technical team before ordering. We will help you verify the correct part number for your vehicle.\u003c\/p\u003e\n \u003ca href=\"https:\/\/cars-ecu.com\/pages\/contact\" class=\"btn-contact\"\u003eContact\u003c\/a\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"info-section\"\u003e\n \u003ch2\u003eImportant Purchase Information\u003c\/h2\u003e\n \u003cul style=\"margin-left: 20px; line-height: 1.9;\"\u003e\n \u003cli\u003ePlease verify the exact module number printed on your original unit before ordering.\u003c\/li\u003e\n \u003cli\u003eWorldwide shipping is available. If your country is not shown at checkout, contact us directly.\u003c\/li\u003e\n \u003cli\u003eReplacing Haldex oil during installation is recommended.\u003c\/li\u003e\n \u003cli\u003eOnline support is available if the module requires coding assistance after installation.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003cscript data-cfasync=\"false\" src=\"\/cdn-cgi\/scripts\/5c5dd728\/cloudflare-static\/email-decode.min.js\"\u003e\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Borgwarner","offers":[{"title":"Default Title","offer_id":53494892790093,"sku":null,"price":299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/files\/1218917E-B963-400A-AEDB-2D0ED83AF29C.webp?v=1772892036"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/collections\/35D54F00-2A3E-4DFC-883F-3E854F0C3083.webp?v=1774705470","url":"https:\/\/cars-ecu.com\/collections\/haldex-ecus.oembed?page=4","provider":"Cars-Ecu","version":"1.0","type":"link"}