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Engine Control Unit, Remove and Install or
Replace
 Remove
| 1. |
When replacing the engine control unit
| • |
Establish communication with TECH2 
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Important: On vehicles as of
model year 04 with ESP - every time the battery is disconnected,
the steering angle sensor loses its basic setting. It must be
recalibrated.
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| 3. |
Disconnect battery
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| 4. |
Loosen coolant compensation tank
| • |
Unclip coolant compensation tank
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| 5. |
Disconnect fuel filter wiring harness plug
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| 6. |
Detach engine control unit bracket
| • |
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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| 7. |
Remove engine control unit
| • |
Unscrew 4x nuts (arrows)
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Install
| 8. |
Fit engine control unit
| • |
Tighten 4 new nuts 15 Nm
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| 9. |
Attach engine control unit bracket
| • |
Connect 2 engine control unit wiring harness plugs
| – |
Lock wiring harness plug
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| 10. |
Connect fuel filter wiring harness plug
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| 11. |
Fasten coolant compensation tank
| • |
Clip in coolant compensation tank
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| 12. |
Fill out sticker
Note: Fill out and
affix service sticker.
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| 14. |
Program volatile memory
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