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:
Adjusting the volume
Turn the knob until the desired volume is selected.
The setting is stored for the remote control
currently in use.
The vehicle automatically adjusts the volume of
the microphone on the telephone ...
Displaying stored Check Controlmessages
1. "Vehicle Info"
2. "Vehicle status"
3. "Check Control"
4. Select the text message. ...
Tire inflation pressures X5 xDrive50i with three rows of seats
...