The concept

Two radar sensors below the rear bumper monitor the area behind and next to the vehicle at speeds above approx. 30 mph/50 km/h.
The system indicates whether there are vehicles in the blind spot, arrow 1, or approaching from behind on the adjacent lane, arrow 2.
The lamp in the exterior mirror housing lights up dimly.
Before you change lanes after setting the turn signal, the system issues a warning in the situations described above.
The lamp in the housing of the exterior mirror flashes and the steering wheel vibrates.
See also:
Controls
This chapter is intended to provide you with
information that will give you complete control of
your vehicle. All features and accessories that are
useful for driving and your safety, comfort an ...
Navigation
This chapter contains various examples of how
the navigation system can guide you reliably to
your destination. ...
Rear doors
Push the locking lever on the rear doors down.
The door can now be opened from the outside
only. ...
