Siemens
1K0907554C Haldex control unit Refurbished
1K0907554C Haldex control unit Refurbished
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Refurbished Haldex Control Unit 1K0907554C – Gen 2 AWD
Original Siemens – Rear Differential Control Module for 2nd Generation Haldex AWD Vehicles
OEM Part Numbers & Cross-References
1K0907554C • 1K0 907 554 C
1K0907554C • 1K0907554B • 1K0907554A • 1K0907554
HAP511 • 5WP22232-01 • SW:0108 • HW:H05
Technical Specifications
Product Description
This is a refurbished original Siemens Haldex control unit with OEM number 1K0907554C, 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.
What This Control Unit Does
- Controls the Haldex coupling for rear-wheel engagement on demand
- Communicates with the vehicle’s ABS / ESP and drivetrain modules
- Monitors system operation and stores diagnostic trouble codes
- Controls pre-charge pump activation and clutch pressure strategy
- Supports stable AWD function in normal driving and low-traction conditions
A 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.
Vehicle Compatibility
Common 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:
Volkswagen
- Tiguan 4Motion
- Golf 4Motion / R32
- Passat 4Motion
Audi
- A3 Quattro
- TT Quattro
Škoda
- Octavia 4x4
- Superb 4x4
- Fabia 4x4
SEAT
- Altea 4x4
- Selected SEAT AWD models with Gen 2 Haldex
Common Diagnostic Fault Codes
Problems with the Haldex control unit can trigger communication faults, pump faults, valve faults, or warning lights on the dashboard. Common fault codes include:
-
00003– Control Module: Defective -
00448– Haldex Clutch Pump (V181): Faulty / Open Circuit -
01324– Control Module for All Wheel Drive (J492): No Communication -
02248– Valve for Controlling Clutch Operating Angle (N373): Defective -
16347– Control Module Defective / Internal Fault -
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 AWD not working at all
Installation & Recommended Service
Installation Notes
- Disconnect battery and safely access the rear differential Haldex module
- Remove the old control unit and inspect connectors for corrosion or moisture
- Fit the replacement ECU carefully and reconnect all plugs securely
- Clear fault codes and check AWD module communication with a suitable diagnostic tool
- Carry out any required coding or adaptation if your vehicle requests it
Recommended While Replacing the Unit
- Replace the Haldex control valve N373 if faulty
- Renew Haldex oil / service fluid
- Check the pump and connector condition before final installation
- Inspect the pre-charge pump and wiring
- Check for stored ABS / AWD communication faults after installation
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 vehicle.
Contact UsImportant Purchase Information
- Please verify this part fits your specific vehicle before placing an order
- The photos are for illustrative purposes only
- Worldwide shipping is available – if your country is not shown at checkout, contact us directly
- Replacing Haldex oil and checking the N373 valve is recommended when fitting a replacement ECU
- Online support is included if the module requires coding after installation
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