See also:

Activating HDC
Press the button; the LED above the button lights up. ...

Audio playback
Selecting the track using the button Press the button for the appropriate direction as often as necessary until the desired track is played back. Selecting the track using the iDrive Audio C ...

Bluetooth audio
At a glance ► Music files on external devices such as audio devices or mobile phones can be played back via Bluetooth. Use of a mobile phone as an audio source, refer to page 205. ► ...