The concept
If the vehicle does not include Active Cruise Control with Stop & Go, the collision warning is controlled via the camera in the base of the interior rearview mirror.
The system issues a two-phase warning of a danger of collision at speeds above approx.
10 mph/15 km/h. The time of these warnings may vary depending on the current driving situation.

In the process, vehicles in a similar direction of movement are observed if they are located within the detection range of the system.
When the vehicle is intentionally brought into contact with a vehicle, the collision warning is delayed to avoid false warnings.
See also:
Switching on/off manually
Switching on/off manually
Press the button.
▷ On: the LED lights up.
▷ Off: the LED goes out.
If PDC is displayed, switch on the backup camera
via the iDrive ...
Wiper blade replacement
Do not fold down the wipers without wiper
blades
Do not fold down the wipers if wiper blades have
not been installed; this may damage the windshield.◀ ...
Components of the integrated Owner's Manual
The integrated Owner's Manual consists of
three parts, which offer various levels of information
or access possibilities.
Quick Reference Guide
Located in the Quick Reference is important inform ...
