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Lane change by another vehicle
A vehicle that changes to the lane a short distance
away may not be recognized by the ACC in time.
Stationary vehicle
If a vehicle in front turns and there is a stationary ve-
hicle in front of this vehicle, the ACC will not respond
to the stationary vehicle.
Vehicles with special load or special bodies
A load or superstructure that protrudes outside the
vehicle might not be detected by the ACC.
Settings
In Infotainment, in the following menu.
◼
▶
Driving profile: - Setting the vehicle acceleration when
the ACC is switched on (this setting is made for
vehicles with driving mode selection
Last distance selected - Switch the last selected dis-
▶
tance level on/off
Distance: - Setting the distance to vehicles in front
▶
▶
Road layout preview - switch the cruise control on/off
according to the road profile (e.g. reduce speed
before a bend)
Speed limit preview - Switch the speed control on/off
▶
according to the permissible speed
Troubleshooting
ACC not available
illuminates together with
›
Stop the engine and start again.
›
If ACC is still unavailable, check the brake lights on
the vehicle or on the attached trailer.
›
Replace the defective bulb.
›
If the brake lights are working and ACC is still un-
available, seek the help of a specialist garage.
Lane Assist
Usage
Lane Assist helps to keep the vehicle within the lane.
It is based on the boundaries of a lane. These may in-
clude lane markings, road edges or objects such as
curbs or possibly traffic cones.
The system is intended primarily for use on high-
ways.
Functionality
As the vehicle approaches a lane marking, the sys-
tem executes a steering movement in the opposite
direction from the lane marking. The steering inter-
vention can be overridden manually.
No system intervention occurs when changing lane
with the turn signal on.
Status display in the instrument cluster display
lights up - System is activated and ready to
intervene
lights up - System intervenes
Display
» page
120)
Warning through steering wheel vibrations
Steering wheel vibrations are triggered in the follow-
ing situations.
The vehicle passes over a boundary line without
▶
the indicator switched on.
The system is not able to keep the vehicle within
▶
the lane.
Driver assist systems ›
Lane Assist
Lane boundary highligh-
ted on the right: system
intervenes on the right
when approaching the
lane marking.
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