| Final drive„02D/0AV“ – Checking function of closed Haldex coupling on vehicles with dual clutch gearbox |
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| Oil level of Haldex coupling OK |
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| Checking oil level in Haldex coupling → Chapter. |
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| Correct engine control unit and ABS control unit installed (check coding and control unit identification number). |
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| Place vehicle on lifting platform. |
Caution | For safety reasons it is essential that the wheels do not touch the ground when the vehicle is on the lifting platform. |
| Carry out test with care to avoid damage. |
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| Select gear D and release brake pedal. |
| All four wheels must turn. |
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| Depress accelerator pedal slightly. |
| The engine should pull noticeably against the handbrake. |
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| If pulling power is noticeable: |
| The Haldex coupling is closed; function is OK. |
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| If pulling power is not noticeable: |
| The Haldex coupling is open. Possible cause of fault: |
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| Main pressure regulating valve sticking |
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| Mechanical fault in Haldex coupling |
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| Four-wheel drive control unit -J492- at rear final drive defective |
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