Mercedes-Benz E-Class Operator's Manual page 231

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
function if:
there is poor visibility, e.g. due to
R
insufficient illumination of the road, or due
to snow, rain, fog or spray
there is glare, e.g. from oncoming traffic,
R
the sun or reflections (e.g. when the road
surface is wet)
the windshield is dirty, fogged up, damaged
R
or covered, for instance by a sticker, in the
vicinity of the camera
there are no, several or unclear lane
R
markings for a lane, e.g. in areas with road
construction work
the lane markings are worn away, dark or
R
covered up, e.g. by dirt or snow
the distance to the vehicle in front is too
R
small and the lane markings thus cannot be
detected
the lane markings change quickly, e.g.
R
lanes branch off, cross one another or
merge
the road is narrow and winding
R
there are strong shadows cast on the lane
R
Switching on Lane Keeping Assist
Switch on Active Lane Keeping Assist using
X
the on-board computer; to do so, select
Standard Standard or Adaptive( Adaptive
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
Standard
If
occurs if:
R
R
Adaptive
When
vibration occurs if:
R
R
R
R
R
R
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
R
R
R
The warning vibration occurs later if:
R
R
page 248).
Y
Driving systems
the lines in the assistance graphics display
( page 246) are shown in green. Lane
Y
Keeping Assist is ready for use.
Standard Standard is selected, no warning vibration
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
a driving safety system intervenes, such as
®
ABS, BAS or ESP .
Adaptive Adaptive is selected, no warning
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
a driving safety system intervenes, e.g.
®
ABS, BAS or ESP .
you accelerate hard, e.g. kickdown.
you brake hard.
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
you cut the corner on a sharp bend.
you approach the outer lane marking on a
bend.
the road has very wide lanes, e.g. a
highway.
the system recognizes solid lane markings.
the road has narrow lanes.
you cut the corner on a bend.
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