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 Owners Manual > Parking lights/low beams,
headlight control: Automatic headlight control
Position of switch
: the low beams are activated
and off automatically, e.g., in tunnels, in
twilight or if there is precipitation. The indicator
lamp in the instrument cluster lights up.
When emerging from a tunnel during the day,
the low beams are not switched off immediately
but instead ...