| Check the operation of the Haldex clutch open |
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| Check the Haldex clutch oil level → Chapter. |
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| Check the code and identification number of the engine control units and the ABS. |
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| Position the vehicle on the lift. |
Caution | For safely reasons, position the vehicle on the lift so the wheels are not touching the ground. |
| During the check, proceed with caution to prevent damage. |
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| Step on the clutch pedal, place in first gear and slowly start. |
| All 4 wheels should be turning. |
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| Use the hand brake or the parking brake |
| The rear wheels should stop and the front wheels should continue to turn. |
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| If the rear wheels are not turning: |
| the Haldex clutch is open; it is operating correctly. |
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| If the rear wheels are turning: |
| the Haldex clutch is closed. Possible fault cause: |
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| The main pressure regulation valve may be clogged |
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| Mechanical fault in the Haldex clutch |
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| The four-wheel drive control unit -J492- in the rear final group is faulty |
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| The hand brake indicator lamp -F9- is faulty |
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