12 13 520 Replacing a spark plug connector (M60, M62, M54)
WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Switch Off Ignition:
Remove ignition coils. Refer to 12 13 511 REPLACING IGNITION COIL (M52, M52TU, S52, S50US, M54) .
Detach ignition coil (1) from spark plug connector (2).