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:
Coupe: glass roof, electric
To prevent injuries, watch the glass roof while
closing it.
Take the remote control with you when you leave the car; otherwise, children
could operate the roof and possibly injure themselves.
...
Entertainment
The chapter helps assure your enjoyment when
receiving radio and television stations and playing
CDs, DVDs and tracks from the music collection. ...
Opening/closing the glass sunroof and
sliding visor together
Press the switch twice in the
desired
direction past the resistance
point.
The glass sunroof and sliding visor
move together. Pressing the
switch again stops the motion.
Convenient operat ...
