Engine Control Module: Service and Repair

12 14 550 Replacing Control Unit (DME) (N52T)







IMPORTANT: Read and comply with notes on protection against electrostatic discharge (ESD protection)







Necessary preliminary work:
- Switch off ignition.
- Disconnect battery earth lead.
- Remove acoustic cover

IMPORTANT: Follow instructions for removing and installing control units.







Replacement:
- Carry out programming/encoding







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.







Unlock all plugs from control unit (1) and detach.
Unfasten screws (2).
Tightening torque 12 90 1AZ.
Remove control unit.







NOTE:
Check stored fault messages.
Delete fault memory.