See also:

Useful information
This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences ...

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. ...

MB Info call button
Press and hold MB Info call button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in MB Info call button 1 flashes wh ...