Rejects or ends a call
Press the 
button on the
steering
wheel.
If you are not in the Telephone menu, you can still reject or end a call.
See also:
Removing the towing eye
Loosen the towing eye and unscrew it.
Attach cover 1 to the bumper and press until it
engages.
Place the towing eye in the vehicle tool kit.
...
Switching on/off
The three red indicator lamps in the button
indicate the heating level you have selected.
If the battery voltage is too low, the seat
heating may switch off.
One or more of the indicator lamp ...
Problems with Night View Assist Plus
Problem
Possible causes/consequences and - Solutions
The picture quality of
Night View Assist Plus
has deteriorated.
The windshield wipers are smearing the windshield.
...