OEM Part Numbers

Technical Specifications

Product Description

This is a genuine brand-new OEM Haldex control unit set with part number 09N907554C. The set includes the BorgWarner Gen 4 control unit, a new Haldex control valve N373 and new sealing, making it a practical replacement solution for Volkswagen T5 AWD vehicles that require both the ECU and valve-related service parts.

What This Set Includes

• Brand-new BorgWarner Haldex control unit 09N907554C
• New Haldex clutch control valve N373
• New sealing for installation service
• OEM replacement solution for restoring reliable AWD engagement

Vehicle Compatibility

The 09N907554C set is compatible with selected Volkswagen T5-series vehicles equipped with Gen 4 Haldex AWD. Always verify the exact part number on your existing module before ordering.

Volkswagen

Common Symptoms of a Faulty Module

A defective Haldex control unit or worn N373 valve commonly causes the following issues:

Installation

Installation Steps

• Verify the exact OEM part number on the original control unit
• Disconnect the battery and safely access the Haldex module on the rear differential
• Remove the old controller and inspect connector pins and housing for corrosion or moisture
• Replace the N373 valve and install the new sealing during service
• Install the replacement ECU carefully and reconnect all plugs securely
• Clear stored fault codes and confirm AWD module communication with suitable diagnostic equipment
• Code or adapt the module if required by the vehicle
• Perform a test drive and confirm correct AWD engagement

Why Haldex Control Units Fail

1. Water Ingress & Sealing Failure

Moisture ingress and damaged sealing can affect the control unit housing and internal electronics, leading to corrosion, unstable communication and AWD malfunction.

2. Valve or Pump Related Faults

Failure of the Haldex control valve N373 or related pump components can trigger repeated faults, poor clutch engagement and loss of rear axle drive.

3. Internal Electronic Failure

EEPROM faults, internal memory errors and circuit-board wear can cause intermittent operation, no communication faults or complete loss of rear differential control.

4. Wiring or Power Supply Problems

Damaged wiring, poor terminal contact or unstable power supply can interrupt module operation and create misleading communication or actuator fault codes.

Quality Assurance & Warranty

24-Month Warranty: This new Haldex control unit set has been tested for correct operation and is supplied with a 24-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, pump or drivetrain faults
• Physical damage, water damage after installation or mishandling

Questions or Need Help?

Our technical team is ready to assist with compatibility checks, installation guidance and coding support.

Important Purchase Information

• Please verify this part fits your specific vehicle before placing an order
• Images are for illustrative purposes only
• Worldwide shipping is available
• If your country is not listed at checkout, contact us and the order can be processed manually
• This set includes a new N373 valve and new sealing
• Coding or adaptation may be required after installation and online support is included