Functional Limitations; Collision Warning - BMW 5 series Owner's Manual

Controls
Display in the instrument cluster
The collision warning can be issued in the in‐
strument cluster, in the Head-up Display, and
acoustically.
Warning stages
Symbol Measure
The vehicle lights up red: prewarn‐
ing.
Increase distance.
The vehicle flashes red and an
acoustic signal sounds: acute warn‐
ing.
You are requested to intervene by
braking or making an evasive maneu‐
ver.
Adapting your speed and driving style
The display does not relieve the driver of
the responsibility to adapt his or her driving
speed and style to the traffic conditions.◀
System limits
Be alert
Due to system limitations, warnings may
be not be issued at all, or may be issued late or
improperly. Therefore, always be alert and ready
to intervene; otherwise, there is the danger of an
accident occurring.◀
Detection range
The detection capacity of the radar sensor and
the collision warning has limitations.
This may result in the warning not being issued
or being issued late.
For example, the following situations may not be
detected:
▷ Slow moving vehicles when you approach
them at high speed.
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Safety
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▷ Vehicles that suddenly swerve in front of you
or sharply decelerating vehicles.
▷ Vehicles with an unusual rear appearance.
▷ Two-wheeled vehicles ahead of you.
▷ Pedestrians.

Functional limitations

The system may not be fully functional in the
following situations:
▷ In heavy fog, rain, sprayed water or snowfall.
▷ In tight curves.
▷ If the radar sensor is dirty or obscured.
Prewarning sensitivity
Depending on the set prewarning time, this may
result in increased false warnings.

Collision warning

The concept
If the vehicle does not include Active Cruise
Control with Stop & Go, the collision warning is
controlled via the camera in the base of the in‐
terior rearview mirror.
The system issues a two-phase warning of a
danger of collision at speeds above approx.
10 mph/15 km/h. The time of these warnings
may vary depending on the current driving sit‐
uation.
In the process, vehicles in a similar direction of
movement are observed if they are located
within the detection range of the system.