Driver assistance systems
Introduction
Fig. 205
Instrument panel display: GRA status in-
dications.
The cruise control system (CCS) is able to
maint
ain the set speed fr
om 20 km/h (15
mph).
The CSS only reduces vehicle speed by ceas-
ing to accelerate, not by actively braking the
vehicle
›››
.
St
at
us display
GRA status
›››
Fig. 205
CCS temporarily switched off. The set
speed is displayed in small or darkened
figures.
System error. Contact a specialised
workshop.
A
B
CCS switched on. The speed memory is
empt
y.
The C
CS is switched on. The set speed is
displayed in large figures.
Changing gear in CCS mode
The CCS decelerates as soon as the clutch
pedal is pressed, intervening again automati-
cally after a gear is engaged.
Travelling down hills with the CCS
If the CCS cannot maintain a constant vehi-
cle speed downhill, brake and change down
a gear if necessary. The GRA is temporarily
disabled by pressing the brake.
Automatic off
The GRA disconnects automatically or is
temporarily interrupted:
●
If the system detects a fault that could af-
fect the working order of the CCS.
●
If you press and maintain the accelerator
pedal for a certain time, driving faster than
the stored speed.
●
If the dynamic driving control systems in-
tervene, ASR, ESC, etc.
●
If the brake pedal is pressed.
●
If the airbag is triggered.
●
If the lever is taken out of the D/S position.
C
D
WARNING
Use of GRA could cause accidents and se-
vere injuries if it is not possible to drive at a
constant speed maintaining the safety dis-
tance.
●
Do not use GRA in heavy traffic, if the dis-
tance from the vehicle in front is insuffi-
cient, on steep roads, with several bends or
in slippery circumstances or on flooded
roads.
●
Never use the CCS when driving off-road
or on unpaved roads.
●
Adapt your speed and the distance to the
vehicles ahead in line with visibility, weath-
er, the condition of the road and the traffic
situation.
●
To avoid unexpected operation of the
cruise control system, turn it off every time
you finish using it.
●
It is dangerous to use a set speed which is
too high for other conditions.
●
If driving down a steep gradient, the GRA
cannot maintain a constant speed. The
speed can increase. In this case, brake and
change down a gear.
247