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:
For 520i and 528i: Check oil
level
The concept
The oil level is monitored electronically during
driving and shown on the Control Display.
If the oil level reaches the minimum level, a
check control message is displayed.
Displayi ...
General information
Instructions for voice activation system, refer to
page 22.
To have the available spoken instructions read
out loud: ›Voice commands‹ ...
Driving tips
This chapter provides you with information useful
in dealing with specific driving and operating
modes. ...