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:
Notes
No loose objects in the passenger compartment
Do not stow any objects in the passenger compartment
without securing them; otherwise,
they may present a danger to occupants for instance
during bra ...
All around the center console
1 Headliner
2 Control Display
3 Glove compartment, top/bottom
4 Air vent
5 Hazard warning system
Central locking system
6 Radio
CD/Multimedia
7 Automatic climate control
8 Controller with ...
Open the traffic bulletins
1. "Navigation"
2. "Map"
3. "Traffic Info"
First the traffic bulletins for the calculated
route are displayed.
The traffic bulletins are sorted by their distance
...
