See also:

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. ...

Customer Relations
At a glanceContact Customer Relations for information on all aspects of your vehicle. Calling Customer RelationsVehicle not equipped with BMW Assist or BMW TeleServices 1.  "BMW Assist&quo ...

Functional requirements
The system must have been reset when the inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Always use wheels with TPM electronics to ensure that the ...