Rejecting or ending a call
Press the 
button on the steering
wheel.
If you are not in the Tel menu, you can still reject or end a call.
See also:
Switching wavebands
See "Switching wavebands" in the radio mode
section. ...
Cleaning the display
Before cleaning the display, make sure that it is switched off and has
cooled down.
Clean the display surface using a commercially-available microfiber cloth
and TFT/LCD display cleaner.
...
Information about driving abroad
Converting to symmetrical low beam
when driving abroad: switch the headlamps
to symmetrical low beam in countries in
which traffic drives on the opposite side of the
road to the country where ...