See also:

Software Update
The vehicle supports various external devices depending on the current software version. With a software update, the vehicle can support new cell phones or new external device, for example. ...

Audio playback
Selecting the track using the button Press the button repeatedly until the desired track is played. Selecting the track using the iDrive Audio CDs Select the desired track to begin playback. ...

Activation/deactivation
Press the button. ...