Switching the microphone to mute
When a call is active, the microphone can be muted.
1. "Telephone".
2. "Active calls".
3. 
"Microphone mute"
A microphone that has been switched to mute is automatically reactivated:
▷ When a new connection is established.
▷ When switching between call parties.
See also:
Switching on automatically
With the engine running or the ignition switched
on, shift the selector lever into position R. ...
Safety information
The tire characteristics and tire inflation pressure
influence the following:
▷ The service life of the tires.
▷ Road safety.
▷ Driving comfort. ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle, ...