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Driving
The ACC is operational as of the 2nd gear
(manual gearbo
x).
ACC: engine speed
The message f
or the driver is displayed if,
when the ACC accelerates or brakes, the
driver 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 applied
Vehicles with manual transmission: pressing
the clutch pedal for longer abandons control
mode.
Door open
Vehicles with automatic transmission: the
ACC cannot be activated with the vehicle
stationary and the door open.
WARNING
There is a danger of rear collision when the
minimum distance to the v
ehicle in front is
exceeded and the speed difference be-
tween both vehicles is so great that a
speed reduction by the ACC will not suf-
fice. In this case the brake pedal should be
applied immediately.
●
The ACC may not be able to detect all
situations properly.
●
“Stepping” on the accelerator may
cause the ACC not to intervene in braking.
Driver braking will have priority over inter-
vention by the speed control or adaptive
cruise control.
●
Alw
ays 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,
traffic or weather conditions do not permit
this. Risk of accident!
Note
●
The pr
ogrammed speed is er
ased 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 34), the ACC switches off au-
tomatically.
●
In vehicles with the Start-Stop system,
the engine switches off automatically dur-
ing the ACC stopping phase and restarts
automatically to begin driving.
Function for preventing overtaking
in an inside l
ane
Fig. 240
On the instrument panel display:
ACC activ
e
, v
ehicle detected in an outer lane.
The adaptive cruise control (ACC) has a
function that helps av
oid o
v
ertaking 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. 240.
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 acceler-
ator pedal. At low speeds the function is inac-
tive, for greater comfort in a traffic jam or in
city traffic.
268
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