12 14 550 Replacing control unit (DME)

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Switch off ignition
Disconnect Battery
Remove Microfilter Housing
Follow instructions for Removing And Installing Control Units

IMPORTANT: Read and comply with Notes On Protection Against Electrostatic Damage (ESD Protection).

Replacement:

Carry Out Programming/Coding

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 Fasteners, Locks, Cover And Removal Direction

G04751288

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unlock control unit (2) and remove towards top.

Installation:

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

Unlock control unit (3) and raise slightly.

Fig 2: Identifying Plug, Grommet And Control Unit

G04751291

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: Identifying Plugs, Control Unit And Removal Direction

G04751292

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.

Now clear the fault memory.