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 system issues a two-phase warning of a danger of collision at speeds above approx. 10 mph/15 km/h. The collision warning is available even if cruise control has been deactivated. It resp ...

Malfunction
The warning lamp comes on when the system has failed. A message appears on the Control Display. More information ...