Siemens
1K0907554L Haldex control unit Used
1K0907554L Haldex control unit Used
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Used OEM Haldex Control Unit 1K0907554L – VAG AWD
Original Siemens rear differential control module for Volkswagen Group AWD vehicles with 2nd generation Haldex coupling.
OEM Part Numbers & Cross-References
1K0907554L • 1K0525130L • 5WP22241-01 • 109429-01
1K0907554 • 1K0907554A • 1K0907554B • 1K0907554C • 1K0907554F • 1K0907554L
5WP22222-01 / -02 / -03 • 5WP22232-01 / -02 / -03 / -04 • 104572-05 / -04 / -02 • 107718-02
Technical Specifications
Product Description
This is a used OEM Haldex control unit with part number 1K0907554L, 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.
What This Control Unit Does
- Controls the Haldex coupling for rear-wheel engagement when traction is needed
- Helps restore proper AWD / 4x4 operation in VAG applications
- Communicates with ABS / ESP and related drivetrain systems
- Stores and reports diagnostic trouble codes when faults occur
- Supports stable rear axle engagement in low-grip conditions
Vehicle Compatibility
This 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.
Volkswagen Group
- Volkswagen Tiguan AWD
- Volkswagen Passat AWD
- Volkswagen Golf 4Motion / Golf V 4Motion
- Audi A3 / S3 Quattro
- Audi TT Quattro
- Skoda Superb AWD
- Skoda Octavia II 4x4
- Skoda Fabia AWD applications with matching controller
- Seat Altea 4x4
- Selected VAG vehicles using matching 1K0907554-series or 1K0525130L Haldex ECU
Common Diagnostic Fault Codes & Symptoms
Problems with the Haldex control unit can trigger communication faults, pump or valve faults, and dashboard warning lights. Common fault codes and symptoms include:
-
00003– Control Module: Defective -
00448– Haldex clutch pump (V181) sporadic fault -
02248– Clutch control valve (N373) sporadic fault -
01324– All Wheel Drive Control Module (J492) no communication / intermittent -
16347– Control module EEPROM error -
65535– Internal control module memory error -
No Communication– AWD module not responding - ESP / ABS warning lights on the dashboard
- Rear differential disengagement or AWD not working correctly
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
- Inspect the Haldex clutch pump if related faults are stored
- Check the wiring, connectors and surrounding module area
- Verify AWD operation after installation and road test
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. Pump or Valve Faults
Failures in the Haldex clutch pump or N373 valve can overload the ECU and trigger repeated drivetrain faults or rear axle disengagement.
3. Internal Electronic Failure
Age, vibration and temperature cycling can lead to internal circuit failure, memory errors and unstable AWD operation.
4. Wiring or Connector Problems
Corroded plugs, damaged wiring or weak power supply can create no-communication errors and unreliable AWD function.
Warranty & Support
Warranty of Functionality: This used Haldex control unit is supplied with functionality warranty and online support in case the module needs coding or installation guidance.
Support Includes:
- Compatibility guidance before purchase
- Basic installation and coding advice
- Help with identifying common diagnostic issues
Questions or Need Help?
Our technical team is ready to assist with compatibility checks, installation guidance and diagnostics support.
Contact UsImportant Purchase Information
- Please verify this module 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 needs coding assistance
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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.