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:
Capacities
...
Instrument cluster, electronic displays
1 Symbols and messages, e.g., warnings
2 Range
3 Computer
4 Navigation display
Service display
5 Selection list, e.g., radio
6 Transmission displays ...
Selecting the contact as a navigation
destination
1. Select the desired contact.
2. Select the address.
3. "Start guidance" or "Add as another
destination" ...
