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Operation
The ACC is operational as of the 2nd gear
(m
anual
g
earbox).
ACC: engine speed
The message for the driver is displayed if,
when the ACC accelerates or brakes, the driv-
er does not shift up or down a gear in time,
which means exceeding or not reaching the
permissible engine speed. The ACC switches
itself off. A buzzer warning is heard.
ACC: clutch pressed
Vehicles with a manual gearbox: pressing the
clutch pedal for longer abandons control
mode.
Door open
Vehicles with automatic gearbox: the ACC
cannot be activated with the vehicle station-
ary and the door open.
WARNING
There is a danger of rear collision when the
minimum dist
ance to the vehicle in front is
exceeded and the speed difference between
both vehicles is so great that a speed reduc-
tion by the ACC will not suffice. In this case
the brake pedal should be applied immedi-
ately.
●
The ACC may not be able to detect all situa-
tions properly.
●
“Stepping” on the accelerator may cause
the ACC not to intervene in braking. Driver
braking will have priority over intervention by
the speed contr
ol or adaptive cruise control.
●
Always be ready to use the brakes!
●
Observe country-specific provisions gov-
erning obligatory minimum distances be-
tween vehicles.
●
It is dangerous to activate control and re-
sume the programmed speed if the road, traf-
fic or weather conditions do not permit this.
Risk of accident!
Note
●
The pr
ogrammed s
peed is erased once the
ignition or the ACC are switched off.
●
When the traction control system (ASR) is
deactivated during acceleration or else the
ESC is activated in Sport* Mode
(››› page 123), the ACC switches off automati-
cally.
●
In vehicles with the Start-Stop system, the
engine switches off automatically during the
ACC stopping phase and restarts automatical-
ly to begin driving.
Function for preventing overtaking in
an in
s
ide l
ane
Fig. 200 On the instrument panel display:
A
C
C
active, vehicle detected in an outer lane.
The adaptive cruise control (ACC) has a func-
tion th
at
help
s avoid overtaking while driving
in inside lanes at certain speeds.
If another vehicle is detected travelling at a
slower speed in an outer lane, it is displayed
on the multifunction display ››› Fig. 200.
To avoid overtaking while driving in an inside
lane the system will gently brake, and in ac-
cordance with the speed will prevent the car
from overtaking. The driver can override this
function at any time by pressing the accelera-
tor pedal. At low speeds the function is inac-
tive, for greater comfort in a traffic jam or in
city traffic.
222
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