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174 Driving and parking
174
A A ctiv
ctive Lane Chang
e Lane Change Assist
e Assist
F F unction of A
unction of Activ
ctive Lane Chang
e Lane Change Assist
e Assist
Active Lane Change Assist supports the driver
during lane changes by applying steering torque if
the driver activates a turn signal indicator.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize
dangers (
page 155).
/
Assistance during lane changes is provided if all
the following conditions are met:
You are driving on a freeway or road with mul-
R
tiple lanes in the direction of travel.
The neighboring lane is separated by a broken
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lane marking.
No vehicle is detected in the adjacent lane.
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The vehicle speed is between 50 mph
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(80 km/h) and 110 mph (180 km/h).
Active Lane Change Assist is switched on in
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the multimedia system.
Active Steering Assist is activated and active.
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If no vehicle is detected in the adjacent lane and a
lane change is permitted, the lane change begins
a er the driver has activated the turn signal indi-
cator. This is shown to the driver with a green
arrow next to the ± steering wheel symbol.
Themessage, for example, also appears. If Active
Lane Change Assist has been activated with the
turn signal indicator but a lane change is not
immediately possible, a gray arrow appears next
to the ± steering wheel symbol, which remains
green.
When lane change assistance starts, the turn sig-
nal indicator is automatically activated along with
the display in the Instrument Display.
If the assistance graphic is shown during lane
changes, an additional arrow appears in it point-
ing towards the adjacent lane (
page 164).
/
If a lane change is not possible, the arrow is faded
out a er a few seconds and a new lane change
must be initiated. An immediate lane change is
possible only on freeway sections without speed
limits.
If the system is impaired, Active Lane Change
Assist may be canceled. If it is canceled, the mes-
sage appears in the Instrument Display.
In addition, a warning tone may sound, depending
on the situation.
& W W ARNING
ARNING Risk of accident when changing
lane to an occupied adjacent lane
Lane Change Assist cannot always clearly
detect if the adjacent lane is free.
The lane change might be initiated although
the adjacent lane is not free.
Before changing lanes, make sure that
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the neighboring lane is free and there is
no danger to other road users.
Monitor the lane change.
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& W W ARNING
ARNING Risk of accident if Lane Change
Assist unexpectedly stops functioning
If the system limitations for Lane Change
Assist have been reached, there is no guaran-
tee that the system will remain active.
Lane Change Assist cannot then assist you by
applying steering torque.
Always monitor the lane change and
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keep your hands on the steering wheel.
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