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Adaptive cruise control (ACC)
•
You are alerted to a potential
collision so you may brake earlier
than normal.
•
Brake support is activated to
enable full braking effectiveness.
The collision alerts will only occur if
forward alert is switched on, however
the brake support is always on and
cannot be turned off. Warnings are
both visual and audible. Brake
support is activated automatically if
necessary to reduce the collision
speed. The brake support system
only reduces the collision speed if
you brake immediately once alerted.
WARNINGS
Never wait for a collision
warning. When driving you are
responsible for maintaining the
correct distance and speed, even
when the forward alert system is
used.
The system will only react to
vehicles in front travelling in the
same direction and will not react to
slow or stationary vehicles.
Never drive in a manner to
provoke the forward alert
function. The forward alert system is
designed to assist in emergencies
only.
The system alerts you by warning
chimes and a visual warning in the
information display. When forward
alert is activated a red flashing
warning triangle appears in the
display.
Note: You can switch off the
warning chimes by using the
information display settings.
The forward alert system does not
work in all driving situations and
traffic, weather and road conditions.
The radar sensor detects vehicles in
front that are driving in the same
direction as you. If the risk of collision
still increases after the initial warning
then brake support is activated.
Brake support prepares the brake
system for rapid braking and the
brakes are applied gently, which may
be noticed as a slight jerk. If the brake
pedal is depressed sufficiently quickly
then braking is implemented with full
brake function, even if the force on
the pedal is light.
CAUTION
Warnings may be triggered late,
be absent or triggered
unnecessarily if the traffic situation
means that the radar sensor cannot
accurately detect a vehicle in front.
The forward alert system uses the
same radar sensors as adaptive
cruise control and therefore has the
same limitations. See Principle of
operation (page 177).
Note: Forward alert may be used
with or without the ACC system
enabled.
182
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