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In such cases, Lane Keeping Assist can:
R
give an unnecessary warning
R
not give a warning
There is a risk of an accident.
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 reflection from other vehicles
(e.g. if 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 or several unclear lane mark-
ings for one lane, e.g. roadworks
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
short and thus the lane markings 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 highly variable shade conditions
on the roadway
Switching on Lane Keeping Assist
X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardStandard or AdaptiveAdaptive (Y page 186).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic are
shown in green (Y page 197). Lane Keeping
Assist is ready for use.
If StandardStandard is selected, no warning vibration
occurs if:
R
you have switched on the turn signal. 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
®
.
When Adaptive
Adaptive is selected, no warning vibra-
tion occurs if:
R
you have switched on the turn signal. 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 detects 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 detects solid lane markings
The warning vibration occurs later if:
R
the road has narrow lanes.
R
you cut the corner on a bend
Driving systems
187
Driving and parking
Z
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