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:
Hazard warning flashers
The button is located in the center console. ...
Sport program DS and manual mode M/
S
Push the selector lever to the left out of transmission
position D.
DS is displayed in the instrument cluster.
The sport program of the transmission is activated.
Activating the M/S manual mode
...
Have maintenance carried out
Have vehicles maintained regularly to achieve
optimal vehicle economy and operating life.
Have the maintenance carried out by your service
center.
Please also note the BMW Maintenance System,
...