User Manual - Page 114

For 4 SERIES GRAN COUPE.

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Acute warning with braking function
Warning of the imminent danger of a collision
when the vehicle approaches another object at
a relatively high differential 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 prewarning.
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.
Manual transmission: During a braking inter‐
vention up to a complete stop, the engine may
be shut down.
The braking intervention is executed only if
DSC Dynamic Stability Control is switched on
and Dynamic Traction Control DTC is acti‐
vated.
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.
Thus a warning might not be issued or be is‐
sued 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, depending on the vehicle equipment
version, the field of view of the camera in
the mirror or the radar sensor is dirty or ob‐
scured.
Up to 10 seconds after the start of the en‐
gine, via the Start/Stop knob.
During calibration of the camera immedi‐
ately after vehicle shipment.
If there is 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.
Front-end collision warning
with braking function
The concept
The ystem can help prevent accidents. If an
accident cannot be prevented, the system will
help reduce the collision speed.
Seite 110
Controls Safety
110
Online Edition for Part no. 01 40 2 960 707 - II/15
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