See also:

Text messages
Text messages at the upper edge of the Control Display in combination with a symbol in the instrument cluster explain a Check Control message and the meaning of the indicator and warning lamps ...

ConnectedDrive or BMW Assist
...

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. ...