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Driver assistance systems
System limitations
Fig. 179
On the instrument panel display: ini-
tial syst
em self
-calibration indication.
Front Assist has certain limitations inherent to
the syst
em. Thus, in cert
ain circumstances,
some of the reactions may be inappropriate
from the driver's standpoint. So pay attention
in order to intervene if necessary.
The following conditions may cause the
Front Assist not to react or to do so too
late:
●
In the first few instants of driving after
switching on the ignition, due to the system’s
initial auto-calibration. During this period, a
status icon
›››
Fig. 179is displayed.
●
If the Front Assist is switched off or dam-
aged.
●
If the radar sensor is dirty or covered.
●
On taking tight bends or complex paths.
●
Pressing the accelerator all the way down.
●
If the ASR has been disconnected or the
ESC activated in Sport mode
›››
page 270.
●
If the ESC is controlling.
●
If several brake lights of the vehicle or elec-
trically connected trailer are damaged.
●
If there are metal objects, e.g. guard rails or
sheets used in road works.
●
If the vehicle is reversing.
●
In case of snow or heavy rain.
●
In case of narrow vehicles, such as motor-
bikes.
●
Misaligned vehicles.
●
Vehicles crossing the other's path.
●
Vehicles approaching in the opposite direc-
tion.
●
Loads and accessories of other vehicles
that protrude over the sides, backwards or
over the top.
ACC - Adaptive Cruise Con-
trol*
Introduction
Adaptive Cruise Control (ACC) maintains
a const
ant speed set by the driv
er. When
approaching another vehicle in front, the
ACC detects it and adapts the speed au-
tomatically, maintaining a distance set by
the driver.
Does my vehicle have ACC?
Your vehicle has ACC if it has a configuration
menu in the infotainment system
›››
page 95
and if it has the ACC function buttons on the
multifunction steering wheel
›››
Fig. 180.
Speed range
ACC regulates speeds between 30 km/h (20
mph) and 210 km/h (130 mph).
If the vehicle is fitted with an automatic gear-
box, the ACC can bring the vehicle to a
standstill if a vehicle in front of it stops.
If your vehicle is fitted with a manual gearbox,
you must pay attention to speed and gear
changes. The ACC is deactivated if the
speed is too low (less than 30 km/h) of the
engine RPM is too low or high.
Driver intervention prompt
ACC is subject to certain limitations in-
herent to the system. This means that
the driver will have to control the speed
and distance from other vehicles in cer-
tain situations. In this case, the instru-
ment cluster display will tell you to in-
tervene by applying the brake, and an
audio warning will be played.
»
247
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