12 13 511 Replacing ignition coils (N63)

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Special tools required:

2 410 217

Necessary preliminary work:

Read out the fault memory of the DME control unit.
Check stored fault messages and process procedure.
Switch off ignition.
Remove left and right INTAKE FILTER HOUSINGS .

IMPORTANT: Ignition coils must not be contaminated by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
The silicone tube of the spark plug connector is coated with talc to reduce the pulling forces. The silicone tube must NOT be oiled or greased. This would greatly reduce the durability of the silicone material, which can lead to a failure of the ignition coil.

Unlock plug catch (1) on ignition coil (2) and unplug connector.

Pull out the ignition coil (2) slowly in a smooth upwards movement.

NOTE: There is a possibility that the silicone tube will tear and therefore be destroyed.
This procedure is applicable to all ignition coils.

Fig 1: Unlocking Plug Catch On Ignition Coil

Courtesy of BMW OF NORTH AMERICA, INC.

Procedure for the torn off the silicone tubes of the ignition coil

Connect the special tool 2 410 217 to the spark plug with the torn off silicone tube.

Fig 2: Identifying Special Tool (2 410 217)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the torn off silicone tube (1) with special tool 2 410 217.

Fig 3: Removing Silicone Tube

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Installation note:

Position the ignition coil (1) and gently push it to the limit position, if necessary by twisting it back and forth slightly. Then check anti-twist lock.

The rubber cap must completely surround the sealing collar of the cylinder head cover.

Fig 4: Positioning Ignition Coil

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If rubber parts are squashed, the ignition coil can slip out again during engine operation.

Installation note:

Push connector (1) with connector latch mechanism (2) open onto ignition coil.

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

The connector latch mechanism must engage without great effort.

The connector must be positioned on the counter piece with hardly any gaps when the locking lever is being closed. In the process, the crank webs of the lever are positioned inside the counter piece.

NOTE: The locking lever can become deformed if it is not installed correctly. This means that there is no longer a safety lock on the plug connection. As a result, the connector can slip out during engine operation (loose contact, misfiring).

Fig 5: Closing Connector Catch

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Delete the fault memory.