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:
Calling up information on the info display
Calling up information on the info display
Press the onboard computer button on the turn
signal lever.
Information is displayed on the info display of the
instrument cluster. ...
Initializing after a power failure
After a power failure during the opening or closing
process, the roof can only be operated to a
limited extent.
Initializing the system
The system can be initialized when the vehicle
is statio ...
Safety information
It is not merely the tires' service life, but also
driving comfort and, to a great extent, driving
safety that depend on the condition of the tires
and the maintenance of the specified tire pres ...
