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:
Visual warning
The approach of the vehicle to an object can be
shown on the Control Display.
When the distance to an object is small, a red bar
is shown in front of the vehicle, as it is in the PDC
display.
...
Roadside Assistance
Service availability
Roadside Assistance can be reached around the
clock in many countries. You can obtain assistance
there in the event of a vehicle breakdown.
Roadside Assistance
The Roadside ...
Checking the coolant level
1. Do not open the hood until the engine has
cooled down.
2. Turn the expansion tank cap counterclockwise
slightly to allow any accumulated pressure
to escape; then continue turning to
open.
...
