The concept
If the vehicle is equipped with Active Cruise Control with Stop & Go, the collision warning is controlled via the cruise control radar sensor.
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.
The collision warning is available even if cruise control has been deactivated.

It responds to stationary or moving objects that are within the detection range of the radar system.
When the vehicle is intentionally brought into contact with a vehicle, the collision warning is delayed to avoid false warnings.
See also:
Integrated Owner's Manual in
the vehicle
The integrated Owner's Manual can be displayed
on the Control Display. The equipment
and functions that are in the vehicle are described
therein. ...
Contacts
...
Exterior mirrors
At a glance
At a glance
1 Adjusting
2 Left/right, Automatic Curb Monitor
3 Fold in and out
General information
The mirror on the passenger side is more curved
than the driver's side mirror.
...
