See also:

External audio source volume
If an external devices such as an MP3 player or an iPod is connected to the AUX socket, the device's volume may be different from the volume of the internal sound sources such as the disc play ...

Emergency towing
See page 282 for more information. ...

Scanning audio files on an external device
This function plays the first ten seconds of each audio file. This function can be activated/ deactivated under: Bluetooth menu Scan. ...