Siemens
Haldex control unit Volvo 5wp22229-01
Haldex control unit Volvo 5wp22229-01
Couldn't load pickup availability
- Warranty
- Online Support
- Express Shipping
Used OEM Haldex Control Unit 5WP22229-01 – Volvo AWD Gen 2
Original Siemens – Rear Differential Control Module for Volvo AWD Vehicles
OEM Part Numbers & Cross-References
5WP22229-01 • 5WP22229 • 5WP2222901
HAP511 • Siemens 105383-01
Technical Specifications
Product Description
This is a used original Siemens Haldex control unit with OEM number 5WP22229-01, designed for second-generation Volvo AWD systems. The module functions as the electronic management unit of the rear differential system and controls torque transfer to the rear axle when traction is needed.
What This Control Unit Does
- Controls the Haldex coupling to engage rear-wheel drive when required
- Communicates with ABS / ESP and drivetrain systems
- Monitors AWD operation and stores diagnostic trouble codes
- Manages hydraulic clutch pressure strategy in the rear coupling
- Helps restore proper 4x4 / AWD operation when the original ECU has failed
Typical symptoms of a faulty Haldex ECU include loss of rear-wheel drive, communication errors, stored AWD fault codes, or warning lights such as ESP / ABS on the dashboard.
Vehicle Compatibility
Common Volvo applications for this Haldex control unit include the models below. Always confirm the part number on your current module before purchase:
Volvo
- V70 AWD
- XC70 AWD
- XC90 AWD
- S60 AWD
- S80 AWD
Common Diagnostic Faults & Symptoms
Problems with the Haldex control unit can cause the AWD system to stop working or operate intermittently. Common symptoms and diagnostic issues include:
-
No Communication– AWD control module not responding -
N373– Haldex control valve / clutch pressure valve fault - Loss of rear-wheel drive / AWD not working at all
- ESP / ABS warning lights on the dashboard
- Intermittent AWD engagement or stored communication faults
-
094– Communication between control modules
Installation & Recommended Service
Installation Notes
- Disconnect the battery and safely access the rear differential Haldex module
- Remove the old control unit and inspect the connector for corrosion or moisture
- Install the replacement ECU carefully and reconnect all plugs securely
- Clear stored fault codes and check communication with a suitable diagnostic tool
- Carry out coding if required by the vehicle after installation
Recommended While Replacing the Unit
- Inspect the Haldex control valve if faulty
- Renew Haldex oil / service fluid
- Inspect wiring and connector condition
- Check for remaining AWD, ESP or ABS faults after fitting
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 Volvo.
Contact UsImportant Purchase Information
- Please verify this part fits your specific vehicle before placing an order
- Photos are for illustrative purposes only
- Worldwide shipping is available – if your country is not shown at checkout, contact us directly
- Replacing Haldex oil during installation is recommended
- Online support is included if the module requires coding after installation
Share
