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Preheater System Control Unit, Replace
 Remove
Important: On vehicles with ESP -
the steering angle sensor loses its basic adjustment each time the
battery is disconnected. It must be recalibrated.
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| 2. |
Disconnect battery
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| 3. |
Loosen coolant compensation tank
| • |
Unclip coolant compensation tank
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| 4. |
Disconnect fuel filter housing wiring harness plug
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| 5. |
Remove engine control unit
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Disconnect 2 engine control unit wiring harness plugs (1)
| – |
Release wiring harness plug
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| • |
Unscrew 2x nuts (arrows)
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| 6. |
Detach fuse box in engine compartment
| • |
Remove engine compartment fuse box cover
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| • |
Unclip pre-heater system control unit wiring harness
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| 7. |
Remove pre-heating system control unit (1)
| • |
Detach engine compartment fuse box from inner wheel well
Note: Push engine
compartment fuse box carefully to one side.
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| • |
Unclip pre-heating system control unit
| – |
Release wiring harness plug (2) in direction of arrow
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Install
| 8. |
Install pre-heating system control unit
| • |
Connect wiring harness plug.
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| • |
Clip in pre-heating system control unit
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| 9. |
Attach fuse box in engine compartment
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Clip in pre-heating system control unit wiring harness
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| • |
Install engine compartment fuse box cover
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| 10. |
Fit engine control unit
| • |
Connect 2x engine control unit wiring harness plugs
| – |
Lock wiring harness plug
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| 11. |
Connect fuel filter housing wiring harness plug
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| 12. |
Fasten coolant compensation tank
| • |
Clip in coolant compensation tank
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| 14. |
Program volatile memory
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