12 14 550 Replacing control unit (DME)

Necessary preliminary tasks:

Replacement:

IMPORTANT: It is absolutely essential to read out the fault memory with the MoDiC or the BMW DIS and to create a fault memory printout.

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

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Identifying Control Unit Fasteners, Lock And Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unlock control unit (2) and remove towards top.

Installation:

Replacement:

Note device identification number and coding.

Fig 2: Identifying Plug And Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.

Now clear the fault memory.

Necessary preliminary tasks:

IMPORTANT: Read and comply with Notes On Protection Against Electrostatic Damage (ESD Protection) notes on protection against electrostatic damage (ESD protection).

Replacement:

IMPORTANT: It is absolutely essential to read out the fault memory with the MoDiC or the BMW DIS and to create a fault memory printout.

Switch off ignition.

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

Unlock locks (2) in direction of arrow.

Remove cover (3).

Fig 1: Identifying Control Unit Fasteners, Locks And Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Release grommet (2) from electronics box.

Installation:

Make sure grommet (2) is correctly seated in housing (water tightness).

Unlock control unit (3) and raise slightly.

Fig 2: Identifying Plug, Electronics Box Grommet And Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plugs (1) using slide in direction of arrow and remove.

Remove control unit (2).

Installation:

Replacement:

Note device identification number and coding.

Fig 3: Removing Plugs And Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.

Now clear the fault memory.