BMW M4 COUPE Owner's Manual page 117

Issued warning
If you leave the lane and if a lane marking has
been detected, the steering wheel begins vi‐
brating.
If the turn signal is set before changing the
lane, a warning is not issued.
End of warning
The warning is canceled in the following situa‐
tions:
▷ Automatically after approx. 3 seconds.
▷ When returning to your own lane.
▷ When braking hard.
▷ When using the turn signal.
System limits
Safety information
WARNING
The system can react incorrectly or not
at all due to the system limits. There is a risk of
accidents or risk of property damage. Observe
the information regarding the system limits
and actively intervene, if needed.◀
Functional limitations
The system may not be fully functional in the
following situations:
▷ In heavy fog, rain or snowfall.
▷ In the event of missing, worn, poorly visi‐
ble, merging, diverging, or multiple lane
markings such as in construction areas.
▷ When lane markings are covered in snow,
ice, dirt or water.
▷ 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.
Online Edition for Part no. 01 40 2 974 597 - VI/16
Safety
▷ 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.
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.◀
Controls
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