{"title":"Haldex Ecu 2.\/3.GEN.","description":"\u003cp\u003eExplore our selection of Haldex 2nd generation ECU control units, available as remanufactured and used. Designed for VW, Audi, Skoda, and Seat vehicles, these units are tested for reliability and performance. Affordable and high-quality solutions for your Haldex system needs.\u003c\/p\u003e","products":[{"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-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; 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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\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-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-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-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-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-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-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-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-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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/6945\/5181\/collections\/photo_2024-10-21_15-41-37.jpg?v=1760546011","url":"https:\/\/cars-ecu.com\/collections\/haldex-ecu-2-gen.oembed","provider":"Cars-Ecu","version":"1.0","type":"link"}