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:
Buckling the belt
Buckling the belt
Make sure you hear the latch plate engage in the
belt buckle. ...
Configuring the prewarning
After the warning function is switched on, the
following can be set via the iDrive:
The prewarning can be switched on/off.
The time of the prewarning can be set.
These settings have no effe ...
Adjusting
The following settings are available:
"Rear displays"
"Language/Units": language can be set
globally for all screens.
"Tone"
...