12 13 511 Replacing ignition coil (M60, M62): E53:

Screw thin grounding cable (1) to ignition coil of cylinder 2 or 7.

Screw thick grounding cable (2) to ignition coil of cylinder 3 or 7.

Fig 1: Screwing Grounding Straps To Ignition Coils Of Cylinders 3 And 6

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Check stored fault messages.

Rectify faults.

Now clear the fault memory.