12 13 511 Replacing the ignition coils (N63 B40/B44 O 1)

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 ACOUSTIC COVER

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.

Release screw (1).

Tightening torque 17 10 2AZ .

Lay expansion tank (2) for charge air cooler to one side.

Fig 1: Identifying Charge Air Cooler Expansion Tank And Screw

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Release screws (1).

Tightening torque 17 10 3AZ .

Remove holder (2) for expansion tank.

Fig 2: Identifying Expansion Tank Holder And Screws

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Unlock connector fastener (1) on the ignition coil (2) and detach 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 3: Unlocking Catch And Pulling Out Ignition Coil

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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 4: Identifying Special Tool (2 410 217)

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

Fig 5: Removing Silicone Tube

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Installation note:

Position the ignition coil 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.

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

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

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

Fig 6: Pushing Connector Onto Ignition Coil And Closing Fastener

Courtesy of BMW OF NORTH AMERICA, INC.

The connector fastener must snap into place 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).

NOTE: Delete the fault memory.