Display in the instrument cluster
The collision warning can be issued in the instrument cluster, in the Head-up Display, and acoustically.
Warning stages

Adapting your speed and driving style
The display does not relieve the driver of the responsibility to adapt his or her driving speed and style to the traffic conditions.
See also:
Enabling operation in the rear
Only possible via the iDrive in the front.
1. "Settings"
2. "Allow rear control"
3. Select the desired priority.
...
The concept
The parking brake is primarily intended to prevent
the vehicle from rolling while parked; it
brakes the rear wheels.
The parking brake can be set manually or automatically:
▷ Manual: by pu ...
Units of measure
To set the respective units of measure, miles or
km for the odometer and ℃ or ℉ for the external
temperature.
The setting is stored for the remote control currently
in use. ...
