Borgwarner
0AY907554J Haldex control unit Used
0AY907554J Haldex control unit Used
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Refurbished Haldex Control Unit 0AY907554J – Gen 5 AWD
Original BorgWarner rear differential control module for VAG 5th generation Haldex AWD vehicles
OEM Part Numbers & Cross-References
0AY907554J • 0AY 907 554 J
0AY907554F • 0AY907554J
BorgWarner • SW:7540 • HW:H52
Technical Specifications
Product Description
This is an original BorgWarner Haldex control unit with OEM number 0AY907554J, intended for 5th generation Haldex AWD systems used in a wide range of Volkswagen Group vehicles. The module controls rear differential engagement, communicates with ABS / ESP systems and helps restore correct torque transfer to the rear axle.
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
- Stores and reports diagnostic trouble codes
- Helps restore AWD performance after control unit failure
- Supports traction and stability in low-grip driving conditions
A faulty Gen 5 Haldex ECU can cause AWD disengagement, no-communication faults, intermittent ABS-related errors or dashboard ESP / ABS warning lights. This tested replacement unit is prepared to help restore normal AWD function in compatible vehicles.
Vehicle Compatibility
This 5th generation Haldex controller is used across a broad range of VAG AWD vehicles. Always verify the exact part number on the original module before purchase:
Volkswagen
- Golf AWD / 4Motion
- Passat AWD / 4Motion
- Tiguan AWD
- Sharan AWD
- Transporter AWD
- Caddy AWD
Audi
- A1 Quattro
- A3 Quattro
- TT Quattro
- Q2 Quattro
- Q3 Quattro
Škoda
- Octavia 4x4
- Kodiaq 4x4
- Superb 4x4
- Karoq 4x4
- Yeti 4x4
SEAT
- Leon 4Drive
- Ateca 4Drive
- Arona AWD applications
- Tarraco 4Drive
- Alhambra AWD
Common Diagnostic Fault Codes
Problems with the Haldex control unit can trigger communication faults and AWD malfunctions. Common fault codes and symptoms include:
-
01324– Control Module for All Wheel Drive (J492): No Communication -
01316– ABS Control Module: Check DTC Memory / Intermittent -
No Communication– AWD module not responding - ESP / ABS warning lamps illuminated on dashboard
- AWD not working correctly or rear axle not engaging
- Intermittent traction loss or drivetrain fault behavior
Installation & Service Notes
Installation Notes
- Disconnect the battery before accessing the rear differential Haldex module
- Remove the old control unit and inspect the housing and connectors for moisture or corrosion
- Install the replacement ECU carefully and reconnect all plugs securely
- Clear stored fault codes and confirm module communication with a suitable diagnostic tool
- Carry out coding or adaptation if required by the vehicle after installation
Recommended Checks
- Check Haldex pump operation and electrical supply
- Inspect wiring and connectors for intermittent communication issues
- Verify AWD operation after installation and road test
- Review related ABS / ESP fault memory if communication errors persist
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 directly for manual processing
- Online support is included if the module requires coding after installation
- Vehicle fitment should always be confirmed by the original ECU number
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Let customers speak for us
from 25 reviewsGreat selection of parts. Reasonable pricing. Fast delivery and super service/support. My new Haldex ECU worked like a charm, once the car had recognised it (took a couple of restarts of the car and fault code clearing with OBDeleven). Highly recommend!
Fantastic company, Jakub who is very helpfull and swift to reply. Helped me fix my haldex gen 5 myself, would really recommend anyone to work with or buy from this great company! Thanks again for your help Jakub
Die Lieferung kam sehr schnell an und alles war sehr professionell verpackt. Vielen Dank, ich bin sehr zufrieden!
Super komunikace, rychlé doručení - zásilka dorazila za 4 dny, po instalaci nové ŘJ mi pan pomohl nakódovat a zprovoznit. Díly pro haldex už jedině zde.
Esperienza positiva. molto professionali e disponibili. Grazie ancora. Alla prossima.
Habe einen älteren Volvo XC90, bei dem das Steuergerät für die Haldex Kupplung defekt war. Hier fand ich ein (geprüftes) gebrauchtes Gerät zu einem fairen Preis. Der Versand brauchte etwas über eine Woche, aber das war für mich ok. Allzeit netter Kontakt und schnelle Rückmeldung.
Sehr schneller Versand.
Das überholte Steuergerät funktioniert super.
Freundlicher Händler.