The concept
The system issues a two-phase warning of a danger of collision at speeds above approx. 10 mph/15 km/h.
The collision warning is available even if cruise control has been deactivated.

It responds to moving objects that are within the detection range of the radar system.
When the vehicle is intentionally brought into contact with an object, the collision warning is delayed to avoid false warnings.
See also:
Avoid high engine speeds
Use 1st gear to get the vehicle in motion. Beginning
with 2nd gear, accelerate rapidly. When
accelerating, shift up before reaching high engine
speeds.
When you reach the desired speed, shift i ...
2012 BMW 3 Series: Up Close
Of all BMW's cars, the 3 Series is the one that somehow escaped being hit by
the Chris Bangle ugly stick, so I didn't go to the redesigned compact sedan's
North American debut looking for sweet re ...
Long-term vehicle storage
Your service center can advise you on what to
consider when storing the vehicle for longer
than three months. ...
