12 13 511 Replacing ignition coils (N54)

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. 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.
Remove ACOUSTIC COVER
Remove right TENSION STRUT

IMPORTANT: Ignition coils must not be fouled by fuel.

The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!

Unlock plug catch (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: Removing Ignition Coil

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Installation

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

Fig 2: Identifying Ignition Coil Rubber Seal

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Installation

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

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

The plug catch must snap into place without great effort.

Fig 3: Closing Plug Catch

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Now clear the fault memory.