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Driving
Disconnecting and deactivating the ACC
●
To disconnect the ACC move the lever to
position (fix
ed)
›››
Fig. 256
0
. An ACC de-
activated message appears and the func-
tion is t
otally deactivated.
If you do not wish to disconnect the ACC, just
to switch it temporarily to inactive mode
(Standby), move the third lever to position
3
or press the brake pedal.
It will al
so switch to inactive mode (Standby)
if the vehicle is stopped and the driver door is
opened.
Adjusting the default distance level at the
start of your journey
In wet road conditions, you should always set
a larger distance with regard to the vehicle in
front than when driving in dry conditions
›››
.
When connecting the ACC, the dist
ance level
can be preset to: Very short, Short, Medium,
Long, Very long and Last distance. To access
the Settings menu, depending on the fea-
tures, use the arrow keys and the wheel of the
multi-function steering wheel or the button on
the windscreen wiper lever
›››
page 85.
Changing the driving profile
The driving profile can be used to modify the
ACC acceleration and braking behaviour.
There are three profiles available though the
instrument panel menu at Settings > As-
sistants > ACC > Basic settings:
●
Normal
●
Sport,
●
Eco
To access the Settings menu, depending on
the features, use the arrow keys and the
wheel of the multi-function steering wheel or
the button on the windscreen wiper lever
›››
page 85.
The following conditions may lead the
ACC not to react:
●
If the accelerator is pressed.
●
If there is no gear engaged.
●
If the ESC is controlling.
●
If the driver is not wearing his/her seat belt.
●
If several brake lights of the vehicle or elec-
trically connected trailer are damaged.
●
If the vehicle is reversing.
●
Driving faster than 210 km/h (130 mph).
WARNING
There is a danger of rear collision when the
dist
ance to the vehicle 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 abl
e 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 pr
ogrammed speed is erased once
the ignition or the ACC are switched off.
●
When the anti-slip regulation (ASR) is dis-
connected while accelerating, the ACC
disconnects automatically.
●
In vehicles with the Start-Stop system,
the engine switches off during the ACC
stopping phase and restarts for moving off.
272
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