See also:

USB audio interface/audio interface for mobile phone
OverviewIt is possible to connect external audio devices. They can be operated via iDrive. Sound is output over the vehicle speakers. Options for connecting external devices > Connection via US ...

Tone
The sound settings are stored for the remote control currently in use. ...

Online Search
1. "Google™ Search" 2. Select a special destination. 3. Select the symbol. 4. "Start guidance" ...