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:
External temperature
External temperature warning
If the display drops to +37 ℉/
+3 ℃, a signal sounds.
A Check Control message is displayed.
There is the increased danger of
ice.
Ice on roads
Even ...
General information
The interior lamps, footwell lamps, entry lamps
and courtesy lamps are controlled automatically.
The brightness of some of these lamps is influenced
by the thumbwheel for the instrument
lightin ...
Dynamic options: M Sport package, Adaptive M Sport suspension, sports
automatic transmission and BMW 3-Series xDrive
Enthusiasts will welcome the further features that are available to enhance
the dynamic driving qualities of the new BMW 3-Series and give them a
distinctive visual dimension as well. The M Sport ...
