BMW X5 M Owner's Manual page 119

Prewarning
This warning is issued, e.g., when there is the
impending danger of a collision or the distance
to the vehicle ahead is too small.
The driver must intervene actively when there
is a prewarning.
Acute warning with braking function
Acute warning in displayed in case of the immi‐
nent danger of a collision when the vehicle ap‐
proaches another object at a relatively high dif‐
ferential speed.
The driver must intervene actively when there
is an acute warning. If necessary, the driver is
assisted by a minor automatic braking inter‐
vention in a possible risk of collision.
Acute warnings can also be triggered without
previous forewarning.
Braking intervention
The warning prompts the driver himself/herself
to react. During a warning, the maximum brak‐
ing force is used. Premise for the brake boos‐
ter is sufficiently quick and hard stepping on
the brake pedal. The system can assist with
some braking intervention if there is risk of a
collision. At low speeds vehicles may thus
come to a complete stop.
The braking intervention is executed only if
DSC Dynamic Stability Control is switched on
and M Dynamic mode MDM is not activated.
The braking intervention can be interrupted by
stepping on the accelerator pedal or by ac‐
tively moving the steering wheel.
Object detection can be restricted. Limitations
of the detection range and functional restric‐
tions are to be considered.
System limits
Detection range
The system's detection potential is limited.
Online Edition for Part no. 01 40 2 964 090 - VI/15
Safety
Thus a system reaction might not come or
might come late.
E. g. the following situations may not be de‐
tected:
▷ Slow moving vehicles when you approach
them at high speed.
▷ Vehicles that suddenly swerve in front of
you, or sharply decelerating vehicles.
▷ Vehicles with an unusual rear appearance.
▷ Two-wheeled vehicles ahead of you.
Functional limitations
The system may not be fully functional in the
following situations:
▷ In heavy fog, rain, sprayed water or snow‐
fall.
▷ In tight curves.
▷ If the driving stability control systems are
limited or deactivated, e.g., DSC OFF.
▷ If the field of view of the camera in the mir‐
ror is dirty or obscured.
▷ Up to 10 seconds after the start of the en‐
gine, via the Start/Stop button.
▷ During calibration of the camera immedi‐
ately after vehicle delivery.
▷ If there are constant blinding effects be‐
cause of oncoming light, e. g., from the sun
low in the sky.
Warning sensitivity
The more sensitive the warning settings are,
e.g. the warning time, the more warnings are
displayed. However, there may also be an ex‐
cess of false warnings.
Pedestrian warning
Depending on how the vehicle is equipped, the
function warns of an imminent collision with
pedestrians during daytime or nighttime.
The function is subdivided into the following
systems:
Controls
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