See also:

Comfort seat
The distance from the back of the seat occupant's head can be adjusted using the shoulder support. Adjusting side extensions   Adjusting side extensions You can fold the side extensions ...

Adjusting
The following settings are available: "Rear displays" "Language/Units": language can be set globally for all screens. "Tone" ...

Treble, bass, balance, and fader
▷ "Treble": treble adjustment. ▷ "Bass": depth adjustment. ▷ "Balance": left/right volume distribution. ▷ "Fader": front/rear volume ...