Lumbar support
The curvature of the seat backrest can be adjusted in such a way that it supports the lumbar region of the spine. The lower back and the spine are supported for upright posture.

▷ Press the front/rear section of the switch.
The curvature is increased/ decreased.
▷ Press the upper/lower section of the switch.
The curvature is shifted up/ down.
See also:
Displaying stored Check Controlmessages
1. "Vehicle Info"
2. "Vehicle status"
3. "Check Control"
4. Select the text message. ...
Service booklet
Perform maintenance work at the service center,
and record the work in the service booklet.
The entries are proof of regular maintenance. ...
Tone control
You can alter various tone settings, e.g. treble and bass or the speed-dependent
volume increase.
The tone settings are applied to all audio sources.
The settings are stored for the remote control ...
