See also:

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. The PDC is shown on the Control Display. Switch on the backup camera via the iDrive. ...

Operation
Adjusting the volume Turn the knob until the desired volume is reached. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the microphon ...

Charging the battery
In the vehicle, only charge the battery via the terminals in the engine compartment, with the engine switched off. ...