Engine Control Module: Service and Repair

12 14 550 Replacing Control Unit (DME)







Necessary preliminary tasks:
- Turn off ignition
- Clamp off 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:
- Encode control unit.
- Program control unit







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).







Unlock plug (1) and remove.

Unlock control unit (2) and remove towards top.

Installation:
Replacement:

Note device identification number and encoding.







NOTE:
Check stored fault messages.
Delete fault memory.