Driving
ACC: clutch applied
●
Vehicles with manual transmission: pr
essing
the clut
ch pedal f
or longer exits cruise con-
trol.
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
distance to the v
ehicle in front is reduced
and the speed difference between both ve-
hicles is so great that a speed reduction by
the ACC is not sufficient. In this case, brake
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 intervention
by the speed control 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,
traffic or weather conditions do not permit
this. Risk of accident!
Note
●
The programmed speed is er
ased once
the ignition or the ACC are switched off.
●
When the traction control (TCS) is deac-
tivated or else the ESC is activated in
Sport* Mode (
›››
page 87), the ACC
switches off automatically.
●
In vehicles with the Start-Stop system,
the engine switches off during the ACC
stopping phase and restarts for moving off.
Function to prevent overtaking on
the right
Fig. 166 On the instrument panel display: ACC
activ
e
, v
ehicle detected in an outer lane.
The ACC has a function to prevent overtaking
on the right.
If another vehicle is driving more slowly to the
l
eft of the v
ehicl
e, it is shown on the display
›››
Fig. 166.
The system brakes the vehicle to avoid over-
taking on the right, and will avoid overtaking
based on speed. The driver can interrupt the
intervention of the ACC by pressing the ac-
celerator. At low speeds the function is inac-
tive, for greater comfort in a traffic jam or in
city traffic.
Deactivating the ACC temporarily
in certain situations
In the following situations the ACC should be
deactiv
at
ed due t
o the system's limitations
›››
:
●
When overtaking, on closed curves or
mount
ain r
oads, r
oundabouts, slip roads or
roadwork sections, preventing the system
from accelerating to reach the programmed
speed.
●
When going through a tunnel, as operation
could be affected.
●
When other vehicles are going slower in the
left lane. In this case, slower vehicles will be
overtaken on the right.
●
In case of heavy rain, snow or fog, the vehi-
cle in front may not be detected.
234
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