A Check Control message is displayed in the following situations
In this case:
System limits
The system does not function properly if a reset has not been carried out, e.g., a flat tire is reported though tire inflation pressures are correct.
The tire inflation pressure depends on the tire's temperature. Driving or exposure to the sun will increase the tire's temperature, thus increasing the tire inflation pressure. The tire inflation pressure is reduced when the tire temperature falls again. These circumstances may cause a warning when temperatures fall very sharply.
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 ...