The concept
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:
2011 BMW X3 Review by Mike Hanley
The BMW X3 may have been a pioneer among compact luxury crossovers, but a
number of competitors — including the Audi Q5, Mercedes-Benz GLK-Class and Volvo
XC60 — have entered the fray since its de ...
The concept
When the low beams are switched on, this system
automatically switches the high beams on
and off. The procedure is controlled by a sensor
on the front of the interior rearview mirror. The
assi ...
Malfunction
In the event of a failure or malfunction of the
parking brake, secure the vehicle against rolling
using a wheel chock, for example, when leaving
it. ...
