Saving a function
1. Highlight the function via the iDrive.
2. 
Press
the desired button for more
than 2 seconds.
See also:
Traffic bulletins on the map
"Traffic conditions/gray map" active:
The Control Display changes to a black and
white display. This enables a better view of the
traffic bulletins. The day/night mode is disregarded
...
Display
1 Lane departure warning*
2 Active Cruise Control*
3 Desired speed
4 Navigation system*
5 Speed
The collision warning*, Night Vision* pedestrian
warning, or Check Control messages are display ...
Switching on automatically
With the engine running or the ignition switched
on, shift the selector lever into position R. ...