IMPORTANT: Read and comply with NOTES on protection against electrostatic damage (ESD protection).
Necessary preliminary work:
Replacement:
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 screws (1).
Detach coolant hose from cover of electronics box.
Remove electronics box cover (3).
Unlock all connectors (1) from control unit and disconnect.
Detach rubber grommets (2) from electronics box. Place wiring harnesses to the side.
Installation note:
Make sure grommets are correctly fitted (watertightness).
Release retainers (1) on control unit.
Pull out control unit (2) towards top.
Injector adjustment:
If the DDE control unit has been replaced, it will also be necessary to carry out injection quantity compensation! The adjustment value (7-position letter/number code) is engraved on each injector.
Enter the numbers/letters according to the installation position (cylinder) of the injectors.
The adjustment must be entered for each injector.
It is necessary to adjust the injectors to ensure their full operability.
NOTE: Check stored fault messages.
Delete fault memory.
BMW X3 Service & Repair Manual > Wheel wells: Stripping operations - replacing front left wheel arch
NOTE:
Owing to the different engine variants and equipment specifications, not all the
components are taken into consideration.
The following list basically represents the removal sequence.
Disconnect negative battery cable
Remove bumper trim
Remove front underbody protecti ...