System Type
Haldex AWD 2nd Generation
Condition
Refurbished – Fully Tested & Functional
Manufacturer
Continental
Supplier Reference
HAP511 / 5WP22223-04
SW / HW Version
SW 2109 / HW H05
Warranty
12 Months
Tested & Verified Working Unit
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.
OEM Part Numbers & Cross-References
Main OEM Part Number:
7H0907554E • 7H0 907 554 E
Compatible / Related ECU Number:
7H0907554
Supplier / Module References:
HAP511 • Siemens 5WP22223-04 • SW 2109 • HW H05
Always Verify Your Part Number
Please compare the part number printed on your current Haldex control unit before ordering. Vehicle model alone is not always enough to guarantee compatibility.
Technical Specifications
System Type:
Haldex AWD 2nd Generation
Component:
Rear Differential Control Unit (ECU / AWD Module)
Manufacturer:
Continental
Supplier Ref:
HAP511 / Siemens 5WP22223-04
Software Version:
SW 2109
Application:
Volkswagen T5 4Motion / Transporter / Multivan with Gen 2 Haldex AWD
Part Condition:
Refurbished / Fully Tested / Resealed
Warranty Period:
12 Months
Product Description
This is a refurbished OEM Haldex control unit with part number 7H0907554E, 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.
What This Control Unit Does
- Controls hydraulic activation of the Haldex coupling for rear-wheel engagement
- Helps restore proper AWD / 4x4 operation in Volkswagen T5 applications
- Communicates with ABS / ESP and related drivetrain systems
- Stores and reports diagnostic trouble codes when faults occur
- Supports traction and stability in low-grip road conditions
Coding Support
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.
Vehicle Compatibility
This 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.
Volkswagen
- T5 4Motion
- Transporter AWD
- Multivan AWD
- Selected Volkswagen T5 platform vehicles with matching 7H0907554E / 7H0907554 controller
Not Sure About Compatibility?
Send us your VIN number or the part number from your existing Haldex ECU and we will help verify fitment before you order.
Common Diagnostic Fault Codes & Symptoms
Problems with the Haldex control unit can trigger communication faults, valve faults or warning lights on the dashboard. Common fault codes and symptoms include:
-
00003 – Control Module: Defective
-
01324 – Control Module for All Wheel Drive: No Communication
-
02248 – Valve for Controlling Clutch Operating Angle (N373): Defective
-
No Communication – AWD module not responding
-
N373 – Haldex clutch control valve fault
- ESP / ABS warning lamps illuminated on dashboard
- Rear-wheel drive not engaging or 4x4 / AWD not working correctly
- Rear axle disengagement or loss of traction support
Installation & Recommended Service
Installation Notes
- Disconnect the battery and safely access the Haldex module on the rear differential
- Remove the old controller and inspect the connector pins and housing for corrosion or moisture
- Install the replacement ECU carefully and reconnect all plugs securely
- Clear fault codes and confirm AWD module communication with a suitable diagnostic tool
- Carry out coding or adaptation if required by the vehicle after installation
Recommended While Replacing the Unit
- Replace the Haldex control valve N373 when replacing the control unit
- Check the wiring, connectors and surrounding module area
- Inspect the Haldex system for stored drivetrain or stability-control faults
- Verify AWD operation after installation and road test
Online Technical Support Included
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.
Why Haldex Control Units Fail
1. Moisture Ingress & Corrosion
Water or condensation inside the module housing can damage the electronics and interrupt communication with the AWD system.
2. N373 Valve or Hydraulic Faults
A failing clutch control valve or hydraulic issue can overload the control unit and trigger repeated AWD-related faults.
3. Internal Electronic Failure
Age, vibration and temperature cycling can lead to internal circuit failure, communication loss and unstable rear axle engagement.
4. Wiring or Connector Problems
Corroded plugs, damaged wiring or weak power supply can create no-communication errors and unreliable AWD function.
Quality Assurance & Warranty
12-Month Warranty: This refurbished Haldex control unit has been fully tested for correct operation and is supplied with a 12-month warranty under normal operating conditions.
Warranty Coverage Includes:
- Internal control unit malfunction
- Communication failures caused by the module itself
- Faults related to internal memory or controller operation
Warranty Exclusions:
- Incorrect installation or incompatible vehicle fitment
- External wiring, valve or drivetrain faults
- Physical damage, water damage after installation or mishandling
Questions or Need Help?
If 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.
Contact Us
Important Purchase Information
- Please verify this part fits your specific vehicle before placing an order
- Worldwide shipping is available – if your country is not shown at checkout, contact directly for manual processing
- Replacing the Haldex valve N373 is recommended when fitting a replacement ECU
- Online support is included if the module requires coding after installation
