General information
Switch position: 0, 
If the driver door is opened with the ignition switched off, the exterior lighting is automatically switched off at these switch settings:
See also:
Shoulder support
Also supports the back in the shoulder area:
▷ Results in a relaxed seating position.
▷ Reduces strain on the shoulder muscles. ...
Treble, bass, balance, and
fader
▷ "Treble": treble adjustment.
▷ "Bass": depth adjustment.
▷ "Balance": left/right volume distribution.
▷ "Fader": front/rear volu ...
Resetting the tone settings
1. "CD/Multimedia", "Radio" or "Settings"
2. "Tone"
3. "Reset" ...