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Always pay particular attention to the traffic
situation and keep within the lane, espe-
cially if Lane Keeping Assist alerts you.
G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There
is a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane
Keeping Assist.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics.
Lane Keeping Assist cannot take into account
the road, traffic and weather conditions. Lane
Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
The Lane Keeping Assist does not keep the
vehicle in the lane.
The system may be impaired or may not func-
tion if:
R
there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
R
there is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
R
the windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R
there are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con-
struction work
R
the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R
the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge
R
the road is narrow and winding
R
there are strong shadows cast on the road
Switching on Lane Keeping Assist
X
Switch on Lane Keeping Assist using the on-
board computer; to do so, select StandardStandard
or AdaptiveAdaptive (Y page 175).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(Y page 175) are shown in green. Lane
Keeping Assist is ready for use.
Standard
If Standard
Standard is selected, no warning vibration
occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time
R
a driving safety system intervenes, such as
ABS, BAS or ESP
®
Adaptive
When Adaptive
Adaptive is selected, no warning vibra-
tion occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time
R
a driving safety system intervenes, e.g. ABS,
BAS or ESP
®
R
you accelerate hard, e.g. kickdown
R
you brake hard
R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly
R
you cut the corner on a sharp bend
In order that you are warned only when neces-
sary and in good time if you cross the lane
marking, the system recognizes certain condi-
tions and warns you accordingly.
The warning vibration occurs earlier if:
R
you approach the outer lane marking on a
bend
R
the road has very wide lanes, e.g. a freeway
R
the system recognizes solid lane markings
The warning vibration occurs later if:
R
the road has narrow lanes
R
you cut the corner on a bend
166
Driving systems
Driving and parking
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