Driver assistance systems
ACC - Adaptive Cruise Con-
tr
ol*
Intr
oduction
Fig. 162
Detection area.
The ACC is an e
xt
ension of the v
ehicle’s
cruise control function (GRA)
›››
.
It all
o
ws the driv
er to set a cruise speed be-
tween 30 km/h (20 mph) and 210 km/h (130
mph), and select the desired distance from
the vehicle in front.
The ACC adapts the cruising speed of the
vehicle, keeping a safe distance away from
the vehicle in front, if there is one, depending
on speed.
When driving behind another vehicle, the
ACC reduces speed until it is the same as
that of the vehicle ahead and maintains the
set distance between the vehicles. It will be
noticeable that there is a displacement of the
brake pedal. Be careful not to position your
foot under the pedal. If the vehicle ahead ac-
celerates, the ACC also accelerates the vehi-
cle, going no higher than the programmed
target speed.
The ACC can brake vehicle until it stops
completely before a vehicle that stops. If
your vehicle is equipped with a manual gear-
box, on certain occasions the instrument
panel may advise you to reduce gear at a
lower speed (e.g. from 4th to 3rd) and even to
press on the clutch pedal.
The distance programmed should be in-
creased when the road surface is wet.
Driver intervention prompt
ACC is subject to certain limitations inherent
to the system. In other words, in certain cir-
cumstances the driver will have to adjust the
speed and the distance from other vehicles.
In this case, the instrument panel screen will
warn you to intervene by applying the brake
and a warning tone will be heard
›››
page 230.
WARNING
The ACC’s technology cannot overcome
the system's inherent limit
ations or change
the laws of physics. If used negligently or
involuntarily, it may cause serious acci-
dents and injuries. The system is not a re-
placement for driv
er awareness.
●
Adapt your speed and safe distance to
the vehicle in front of you at all times to suit
visibility, weather, road and traffic condi-
tions.
●
Do not use ACC in poor visibility, or on
roads that are steep, with lots of curves or
slippery.
●
Never use ACC when driving off-road or
on unpaved roads. The ACC has been de-
signed for use on paved roads only.
●
ACC does not react when approaching a
stopped vehicle, such as the end of a traffic
jam, a damaged vehicle or a vehicle stop-
ped at traffic lights.
●
The ACC only reacts to people if a pe-
destrian monitoring system is available.
The system does not react to animals or
vehicles crossing your path or approaching
head-on down the same lane.
●
If the ACC does not reduce speed suffi-
ciently, brake the vehicle immediately.
●
If you are driving with a spare wheel fit-
ted, the ACC system could automatically
switch off. Switch off the system when
starting off.
●
If the vehicle continues to move involun-
tarily after a driver intervention prompt,
brake the vehicle.
●
If the instrument panel screen displays a
driver intervention prompt, adjust the dis-
tance or the speed.
»
229
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