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:
Hazard warning flashers
The button is located in the center console. ...
Striking front end with precise contours and multi-faceted surfaces
The wedge shape of the new 3-Series' silhouette and its wider track (+ 37/47
mm at the front/rear) underline the sporting appearance of the new BMW. By
clearly accentuating the width of the car, t ...
Instrument lighting
Adjusting
The parking lamps or low beams
must be switched on to adjust the
brightness.
Adjust the brightness using the
thumbwheel. ...
