Engine Control Module: Service and Repair

12 14 550 - Replacing control unit (DME)





Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).





Necessary preliminary tasks:
- Read fault memory.
- Switch off ignition
- Disconnect battery Disconnecting and Connecting Battery Negative Lead
- Remove lower section of microfilter housing on right Removing and Installing/Replacing Left or Right Microfilter Housing Lower Section.

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





Unlock cover (1) with slide (3).
Release bolts (2).
Remove electronics box cover (1).

Installation Note:
Engage electronics box cover (1) correctly in hinges.

Security version:

Remove DME armor plating.





Unlock and detach all plug connections on DME control unit (1).
Unlock DME control unit (1) and remove.





Carry out coding/programming Programming and Relearning.





Note:
Read out fault memory of DME control unit.
Check stored fault messages.
Now clear the fault memory.