12 14 550 Replacing Control Unit (DME)
Necessary preliminary tasks:
- Switch off ignition
- Disconnect battery . See 12 00... Instructions For Disconnecting And Connecting Battery .
- Remove microfilter housing . See 64 31 081 REMOVING AND INSTALLING/REPLACING MICROFILTER HOUSING (UPPER SECTION) and 64 31 092 REMOVING AND INSTALLING/REPLACING MICROFILTER HOUSING (LOWER SECTION) .
- Follow instructions for removing and installing control units
IMPORTANT:
Read and comply with notes on protection against electrostatic damage (ESD protection).
See 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) (CONVERTIBLE)
or 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) (COUPE)
.
Replacement:
- Code 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 coding.
NOTE:
Check stored fault messages.
Now clear the fault memory.