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Switching on/off
Switching on automatically
The system is automatically active after every
driving-off.
Switch off
Press button: the system is switched
off. The LED goes out.
Re-press button: the system is switched on.
The LED lights up.
Setting the warning time
The warning time can be set via iDrive.
1.
"Settings"
2. "Frontal Coll. Warning"
3. Activate the desired time on the Control
Display.
The selected time is stored for the profile cur‐
rently in use.
Warning with braking function
Display
If a collision with a recognized vehicle is immi‐
nent a warning symbol appears in the instru‐
ment cluster and in the Head-Up Display.
Symbol Measure
The vehicle lights up red: prewarn‐
ing.
Brake and increase distance.
The vehicle flashes red and an
acoustic signal sounds: acute warn‐
ing.
You are requested to intervene by
braking or make an evasive maneu‐
ver.
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
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.
Seite 106
Controls Safety
106
Online Edition for Part no. 01 40 2 961 270 - II/15
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