See also:

Interior motion sensor
The windows and glass sunroof must be closed for the system to function properly. ...

Tire inflation pressure values over100 mph/160 km/h
X3 28i X3 35i ...

Sound output
Switching on/off When the ignition is switched off: press ON/OFF button on the radio. Muting When the ignition is switched on or the engine is running: press the ON/OFF button on the radio. ...