12 13 511 Replacing ignition coils

12 13 511 Replacing Ignition Coils (N55)







Necessary preliminary tasks:
- Read out the fault memory of the DME control unit.
- Check stored fault messages and process procedure.
- Switch off ignition.
- Remove rear ignition coil 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.







Release oxygen sensor connector (1) from bracket.
Release screw (2).
Put cable clip aside.







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.







Installation note:
Push connector (1) with connector catch (2) open onto ignition coil.
Carefully close connector catch (2) in direction of arrow.
The connector catch must snap into place without great effort.







NOTE:
Delete fault memory.
Assemble engine.