See also:

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. ...

Making adjustments in 5 mph (Canada:

10 km/h) increments
Briefly press the cruise control lever beyond the pressure point, up 1 for a higher speed or down 2 for a lower speed. The last speed stored is increased or reduced. ...

General notes
WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes ...