12 51 100 Replacing wiring harness section for ignition coil (N62, N62TU)
WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
Necessary preliminary tasks:
- Read out fault memory of DME control unit; if necessary, work through test schedules.
- Switch off ignition.
- Remove right fresh air duct . See 64 31 053 REMOVING AND INSTALLING OR REPLACING FRESH AIR DUCT .
Installation:
Make sure seal of wiring harness section for ignition coils is correctly installed in electronics box.
Unlock stopper (1) in direction of arrow.
Release screws.
Lift out cover (2).
WORK STEP CHART
| Work step | Note: |
|---|---|
| Remove acoustic cover by unfastening 4 screws. Raise acoustic cover and remove towards front. | |
| Unlock and detach plug connections on DME control unit. | Only plug connections of wiring harness section for ignition coils |
| Remove ignition coil cover | This is described in Replacing ignition coil . |
| Detach grounding cable from cylinder head cover. | Pay attention to interference suppression line |
| Unclip cable duct. | |
| Unlock plug connections on ignition coils and disconnect | Do not remove ignition coils This is described in Replacing ignition coil . |
| Remove engine vent hose | |
| Unclip and remove wiring harness. |
NOTE:
Now clear the fault memory.