12 13 511 Replacing ignition coil (M52, M52TU, S52, S50US, M54)

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

Switch off ignition.

Remove cover for ignition coils.

Version With Single-Spark Ignition Coils:

Unlock connector of ignition coils.

Disconnect connector from ignition coils.

Fig 1: Disconnecting Connector From Ignition Coils

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws on ignition coil.

Pull out ignition coil.

Installation:

Screw down grounding strap (1) to cylinder head cover mounting and to ignition coil for cylinders 1 and 6.

On metal covers:

Screw down grounding strap of cable duct to cylinder head cover mounting between cylinders 2 and 3.

Fig 2: Installing Down Grounding Strap To Cylinder Head Cover Mounting And To Ignition Coil

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Plastic cover M52TU, M54:

Screw down grounding strap (1) of connecting plate of ignition coils with retaining pin of ignition coil of cylinder 1.

Screw down grounding strap (2) of cable duct with connecting plate of ignition coils between cylinders 2 and 3.

Fig 3: Locating Grounding Straps And Connecting Plates

Courtesy of BMW OF NORTH AMERICA, INC.

Version With Rod-Type Ignition Coils:

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

Pull ignition coil (1) up and out.

Fig 4: Pulling Ignition Coil (1) Up And Out

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 5: Checking Rubber Seal Of Ignition Coil Is Correctly Seated

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Interrogate fault memory of DME control unit.

Check stored fault messages.

Now clear the fault memory.