Necessary preliminary work:
Release screws (1).
Detach actuator drive for stratification flap (2) from heating/air conditioning unit (4).
Unlock plug connection (3) and disconnect.
Servomotors must be readdressed in the event of replacement! Addressing can only be carried out with the BMW diagnosis system.
Service functions:
BMW X3 Service & Repair Manual > Electrical: Switches and relays
REPLACING POWER DISTRIBUTION MODULE (N20, N52T, N55)
Necessary preliminary tasks:
Switch off ignition.
Disconnect BATTERY NEGATIVE LEAD .
Remove left service flap on cowl panel cover.
Unlock and pull off all connectors (1) from power distribution module.
Remove cover (2).
Release n ...