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:
Long-term vehicle storage
Your service center can advise you on what to
consider when storing the vehicle for longer
than three months. ...
Replacing the batteries
No rechargeable batteries
Do not use rechargeable batteries, as
damage may result from the substances in the
batteries.
1. Remove the cover. Press on the cover, arrow
1, and push forward, ...
Deleting stored functions
Press and hold the left and right button on the
interior rearview mirror simultaneously for approximately
20 seconds until the LED flashes
rapidly. All stored functions are deleted. The
functions ...
