BMW GRAN COUPE 4 Series Owner's Manual page 141

▷ In tight curves or on narrow lanes.
▷ When the lane markings are covered by
objects.
▷ When driving very close to the vehicle in
front of you.
▷ When driving toward bright lights.
▷ When the windshield in front of the interior
mirror is fogged over, dirty or covered with
stickers, etc.
▷ During calibration of the camera immedi‐
ately after vehicle delivery.
Active Blind Spot Detection
The concept
Two radar sensors in 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 vehi‐
cles in the blind spot, arrow 1, or approaching
from behind on the adjacent lane, arrow 2.
The lamp in the exterior mirror housing is dim‐
med.
Before you change lanes after setting the turn
signal, the system issues a warning in the sit‐
uations described above.
The lamp in the exterior mirror housing flashes
and the steering wheel vibrates.
Online Edition for Part no. 01402978272 - II/17
Safety
Safety information
WARNING
The system does not release from the
personal responsibility to correctly assess visi‐
bility and traffic situation. There is a risk of an
accident. Adjust the driving style to the traffic
conditions. Watch traffic closely and actively
intervene in the respective situations.◀
Overview
Button in the vehicle
Active Blind Spot Detection
Radar sensors
The radar sensors are located in the rear
bumper.
Switching on/off
Press button.
▷ On: the LED lights up.
▷ Off: the LED goes out.
Controls
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