Generation II Haldex Clutch, Checking Function

Generation II Haldex Clutch, Checking Function

Before performing repairs on Haldex clutch, malfunction cause must be determined as closely as possible via the vehicle diagnostic, testing and information system (VAS 5051) in operating modes "Guided Fault Finding", "Vehicle Self-Diagnosis" and " Test Instruments".

Requirements

• Dynamometer present

• Parking brake released completely - parking brake indicator lights off

- Switch dynamometer off and ensure rollers turn freely.

- Slowly drive front wheels onto rollers.

- Take foot off brake pedal and slowly press the accelerator pedal slightly.

Even at slightly elevated speeds, vehicle must try to drive off rollers. The Haldex clutch function then is OK.

Increase speed, vehicle can then be pressed off the rollers. Use caution when handling.