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:
2008 Mercedes-Benz M-Class Review
Until a 2008 M-Class was assigned to me for this review, I had kind of
forgotten that Mercedes redesigned this luxury SUV two years ago. Sure, I knew
about the update when it was first announced, ...
Driving with summer tires
Observe the notes in the "Winter operation"
section. ...
Crash-responsive emergency lighting
The interior lighting is activated automatically if the vehicle is involved in
an accident.
To switch off the crash-responsive emergency lighting: press the hazard warning
lamp button.
or
Lock ...