12 13 511 Replacing Spark Plugs (N54, N53)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. 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.
Check stored fault messages
Switch off ignition
Remove acoustic cover

Unlock plug retainer (1) of ignition coil (2) and disconnect plug.

Pull ignition coil (2) up and out.

This procedure is applicable to all ignition coils.

Fig 1: Pulling Ignition Coil

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Installation:

Check that rubber seal of ignition coil (1) is correctly seated.

Fig 2: Identifying Ignition Coil

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Installation:

Push plug (1) with plug retainer (2) open onto ignition coil.

Carefully close plug retainer (2) in direction of arrow.

The plug retainer must snap into place without great effort.

Fig 3: Closing Plug Retainer In Direction

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NOTE: Now clear the fault memory.