12 51 100 Replacing wiring harness section for ignition coil (N62)

WARNING: This page is about a different car, the 2006 BMW X5, 2005 BMW X5, and 2004 BMW X5. 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
Switch off ignition
Follow instructions for disconnecting and connecting battery
Disconnect battery

NOTE: The procedure is identical for both sides. The illustrations depict the left side.

Remove HEATER BULKHEAD . Remove acoustic cover. See CYLINDER HEAD WITH COVER . Remove ignition coil cover. Remove electronics box cover.

Unclip cable duct. Unlock plug connections on ignition coils and disconnect. See Replacing Ignition Coil (N62) . Do not remove ignition coils.

Unlock and detach plug connections on DME control unit. Only plug connections of wiring harness section from ignition coils. Release nuts and remove holder (1).

Fig 1: Removing Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws and remove grounding cable.

Unclip and remove wiring harness.

Fig 2: Removing Wiring Harness

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NOTE: Check stored fault messages.

Now clear the fault memory.