Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 171

Active Lane Change Assist
Function of Active Lane Change Assist
Active Lane Change Assist supports the driver
when changing lanes by applying steering torque
if the driver operates a turn signal indicator.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recog‐
nize dangers ( page 150).
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Assistance when changing lanes is provided if all
the following conditions are met:
You are driving on a freeway or road with
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multiple lanes in the direction of travel.
The neighboring lane is separated by a bro‐
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ken 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 after the driver has activated the turn sig‐
nal indicator. This is shown to the driver with a
green arrow next to the ± steering wheel
symbol. The message, 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 the lane change assistance starts, the turn
signal indicator is automatically activated along
with the display in the multifunction display.
If the assistance graphic is shown when chang‐
ing lanes, an additional arrow appears in it point‐
ing towards the adjacent lane ( page 159).
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If a lane change is not possible, the arrow is
faded out after a few seconds and a new lane
change must be initiated. An immediate lane
change is only possible on freeway sections
without speed limits.
If the system is impaired, Active Lane Change
Assist may be canceled. If it is canceled, the
message appears in the multifunction display.
Driving and parking 169
In addition, a warning tone may sound, depend‐
ing on the situation.
& WARNING Risk of accident when chang‐
ing 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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& WARNING Risk of accident if Lane
Change Assist unexpectedly stops func‐
tioning
If the system limitations for Lane Change
Assist have been reached, there is no guar‐
antee that the system will remain active.
Lane Change Assist cannot then assist you
by applying steering torque.