Name: 0CQ907554K Haldex control unit Used
Brand: Borgwarner
Price: 299.00 EUR
Availability: OutOfStock

System Type Haldex AWD 5th Generation

Condition Used – Fully Tested & Functional

Manufacturer BorgWarner

Software / Hardware SW 7762 / HW 55

Drive Select Yes

Warranty 12 Months

Tested & Verified Working Unit Every control unit is individually tested before dispatch. This unit is supplied as a fully functional OEM replacement for compatible Gen 5 Haldex AWD systems and is ready for installation and coding.

OEM Part Numbers & References

OEM Reference Numbers:

0CQ907554K • 0CQ598554A • 0CQ907554C • 0CQ 907 554 K

Software / Hardware References:

SW 7762 • HW 55 • BorgWarner

Important: Verify Before Ordering Always check the part number printed directly on your existing Haldex control unit before placing an order. Model year and vehicle type alone are not enough to confirm compatibility because the hardware variant must match.

Technical Specifications

System Type:

Haldex AWD 5th Generation

Component:

Rear Differential Control Unit (ECU / RDCM)

Software Version:

SW 7762

Hardware Version:

HW 55

Manufacturer:

BorgWarner

Drive Select:

Yes – supports Drive Select functions

Application:

High-performance VAG AWD vehicles with Gen 5 Haldex

Part Condition:

Used / Tested / Verified Working

Product Description

This is a genuine used original BorgWarner Haldex 5th generation control unit with part number 0CQ907554K. It functions as the electronic management module of the rear AWD coupling system and is responsible for activating and regulating the rear differential clutch pack according to traction demand and selected drive mode.

What This Control Unit Does

Monitors wheel speed differences between front and rear axles
Controls the hydraulic pump to build clutch pressure
Activates rear-wheel drive engagement on demand
Communicates with ABS, ESP and engine management systems
Supports Drive Select functions such as Sport, Comfort and Dynamic modes
Manages pump calibration and learned pressure values

The 0CQ907554K variant with HW 55 and SW 7762 is intended for high-performance VAG vehicles equipped with Drive Select functionality. Always verify the exact part number on your original unit to ensure correct fitment.

Coding & Programming Note After installation, the control unit must be coded to the vehicle using VCDS, ODIS or equivalent VAG diagnostic software. A Pump Learn function in Basic Settings must also be performed with the engine running so the AWD system can calibrate pump pressure correctly.

Vehicle Compatibility

The 0CQ907554K is designed for high-performance VAG AWD vehicles with Drive Select functionality. Always verify the part number printed on your current unit before ordering.

Audi

Audi RS3 Sportback 8V (2017+)
Audi RS3 Saloon 8V (2017+)
Audi TTRS Coupe / Roadster FV (2017+)
Audi TT / TTS Coupe / Roadster FV (2015+)
Audi Q2 GA Quattro (2017+)
Audi RSQ3 8U (2014–2018)
Audi RSQ3 F3 Sportback (2020+)
Audi A3 / S3 Sportback 8V (2017–2020)
Audi A3 Cabriolet 8V (2017–2021)

Always Verify Your Part Number Before ordering, please check the part number printed directly on your existing Haldex control unit and confirm it matches this hardware variant. If you are unsure, contact us and we will help verify compatibility.

Common Diagnostic Fault Codes & Symptoms

A faulty Haldex control unit may trigger one or more of the following diagnostic issues or operating symptoms:

131599 – AWD Control Module: No Communication (U0114 00)
131599 – AWD Clutch Module: C1113 07 intermittent error
16670 – All-Wheel Drive: C1113 07 mechanical failure
16671 – Haldex Clutch Pump: C1112 04 internal system fault
16668 – Haldex Pump: C1112 07 mechanical failure intermittent
16666 – Haldex Pump: C1112 13 open circuit
16664 – Haldex Pump: C1112 11 short to ground
17460 – Control module memory checksum error / over temperature
01324 – Control Module AWD (J492): No Communications
01316 – ABS Control Module: Check DTC Memory intermittent
C111307 – Mechanical malfunction passive / sporadic
C111204 – Haldex clutch pump defective

Diagnostic Tip Use a professional VAG-compatible scan tool such as VCDS, ODIS or VCP to diagnose module 22 AWD directly. Basic OBD readers and phone apps often cannot communicate correctly with the Haldex controller.

Installation & Calibration

Installation Steps

Locate the Haldex unit at the rear differential / rear axle assembly
Disconnect the electrical connector and remove the mounting bolts
Carefully detach the old control unit from the coupling housing
Fit the replacement unit and secure all mounting points
Reconnect all electrical connectors and check for a secure fit
Connect diagnostic equipment and code the unit to the vehicle
Perform the Pump Learn function via Basic Settings with the engine running
Take a short test drive and verify AWD engagement

Pump Learn Required After Every Installation

The Pump Learn calibration is a mandatory step whenever a Haldex control unit is replaced. Without it, the system may not supply correct power to the pump and AWD engagement may not function properly.

Recommended Maintenance

Replace Haldex oil during installation
Inspect and clean the pump gauze strainer
Check the 6-pin connector under the rear seat access area
Verify both 12V supply fuses for the Haldex system
Clear all stored fault codes after installation and test drive

Online Technical Support Included If the module requires coding or you need help with the Pump Learn procedure, our technical team can assist. Reach us at [email protected] or use the contact button below.

Why Haldex Control Units Fail

1. Water Ingress & Corrosion

The control unit is mounted in an exposed rear axle area, so moisture and water can eventually damage internal circuit board components and cause communication failures or complete module shutdown.

2. Pump Calibration Data Corruption

The module stores learned pump calibration values. A blocked or failing pump can corrupt these values and trigger internal system fault codes, resulting in loss of AWD operation.

3. Voltage Supply Failures

The Gen 5 Haldex system uses separate 12V supply lines and fuses. Blown fuses, corroded connectors or damaged wiring can cause total AWD loss even when the module itself is still serviceable.

4. Heat & Thermal Stress

Repeated heavy AWD engagement, aggressive driving or tuned high-output vehicles can accelerate thermal wear on solder joints and sensitive electronic components.

5. Oil Contamination

Neglected Haldex oil can leave residue that clogs the pump strainer and internal passages, contributing to false signals, pump overload and incorrect module adaptation values.

Quality Assurance & Warranty

12-Month Warranty: This used Haldex control unit has been fully tested and is backed by a 12-month warranty covering functional defects under normal operating conditions.

Warranty Coverage Includes

Electronic control unit malfunctions
Communication failures with AWD / ABS modules caused by the unit itself
Pump control circuit defects
Internal calibration or memory related faults

Warranty Exclusions

Incorrect installation or failure to perform Pump Learn calibration
Incompatible vehicle fitment or wrong hardware variant ordered
External electrical faults or physical damage during handling

Questions or Need Help?

Our technical team is available to assist with compatibility checks, coding guidance and Pump Learn support before or after purchase.

Contact Us

Important Purchase Information

Confirm the part number on your existing unit matches 0CQ907554K or the listed compatible references before ordering.
Do not substitute with 0CQ907554J or 0CQ907554H because these are different hardware variants and may not support Drive Select vehicles correctly.
Pump Learn calibration must always be performed after installation.
Professional installation is recommended for vehicles requiring advanced VAG diagnostic coding.
Replacing Haldex oil during installation is strongly recommended.

0CQ907554K Haldex control unit Used