See also:

Scroll/search forward and back
Press briefly on (2) to scroll between CD tracks/ audio files or to search for the next available radio station. ...

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 ...

Settings
Press OK/MENU when a normal camera view is displayed and make the desired settings. Parking camera settings Mark Park Assist lines to display the sidelines while backing up. Mark Distance info ...