Engine Control Module: Service and Repair

12 14 550 - Replacing control unit (DME) (N52K)





Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) Service and Repair





Necessary preliminary tasks:
- Switch off ignition
- Clamp off battery negative lead 61 20 900 Disconnecting and Connecting Battery Negative Lead

Important!
Follow instructions for removing and installing control units Service and Repair





Replacement:
- Carry out programming/coding Programming and Relearning





Important!
It is absolutely essential to read out the fault memory with the BMW diagnosis system and to create a fault memory printout.

Switch off ignition.





Release bolts along line (1).
Tightening torque 12 90 2AZ.
Specifications
00 00 Excerpt From Company Standard BMW GS 90003-2

Remove electronics box cover.





Unlock battery positive lead (1), detach and lay to one side.
Release locks (2) in direction of arrow and pull control unit upwards slightly.





Pull control unit (1) upwards slightly until plug (2) can be released from control unit in direction of arrow.
Unlock plug (2) and detach from control unit (1).





Lift out control unit (1).





Note:
Check stored fault messages.
Now clear the fault memory.