See also:

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

AUX-IN port
At a glance ▷ For connecting audio devices, e.g., MP3 player. The sound is output on the vehicle loudspeakers. ▷ Recommendation: use medium tone and volume settings on the audio de ...

USB audio interface/mobile phone audio interface
At a glance It is possible to connect external audio devices. They can be operated via iDrive. The sound is output on the vehicle loudspeakers Connectors for external devices ▷ Connection ...