Necessary preliminary tasks

• Read out fault memory of DME control unit
• Turn off ignition
• Follow instructions for disconnecting and connecting battery

  Disconnect battery negative lead from battery and lay to one side

• Remove MICROFILTER HOUSING
• Remove ACOUSTIC COVER
• Remove CYLINDER HEAD COVER
• Remove front UNDERBODY PROTECTION
• N84 only:

  Remove pedestrian protection

Unlock fasteners (1) from below and slide upwards approx. 10 mm.

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Unlocking Electronic Box Locks

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unlock control unit (2) and raise approx. 5 cm.

Fig 2: Identifying Plug And Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug on control unit and disconnect.

Unlock tab (1). Pull contact carrier (2) in direction of arrow out of housing.

Unlock and disconnect all plug connections of ignition coil wiring harness section in electronics box.

Fig 3: Pulling Contact Carrier Out Of Housing

Courtesy of BMW OF NORTH AMERICA, INC.