Switching On Lane Keeping Assist - Mercedes-Benz GLA Operator's Manual

The system may be impaired or may not func-
tion if:
there is poor visibility, e.g. due to insuffi-
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cient illumination of the road, or due to
snow, rain, fog or spray
there is glare, e.g. from oncoming traffic,
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the sun or reflections (e.g. when the road
surface is wet)
the windshield is dirty, fogged up, damaged
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or covered, for instance by a sticker, in the
vicinity of the camera
there are no, several or unclear lane mark-
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ings for a lane, e.g. in areas with road con-
struction work
the lane markings are worn away, dark or
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covered up, e.g. by dirt or snow
the distance to the vehicle in front is too
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small and the lane markings thus cannot be
detected
the lane markings change quickly, e.g.
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lanes branch off, cross one another or
merge
the road is narrow and winding
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there are strong shadows cast on the lane
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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,
the lane markings in the assistance graph-
ics display ( page 213) are shown in
Y
green.
When Standard is selected, no warning vibra-
tion occurs if:
you switch on the turn signals. In this event,
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the warnings are suppressed for a certain
period of time.
a driving safety system intervenes, such as
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®
ABS, BAS or ESP .
( page 214).
Y
Driving systems
When Adaptive is selected, no warning vibra-
tion occurs if:
you switch on the turn signals. In this event,
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the warnings are suppressed for a certain
period of time.
a driving safety system intervenes, e.g.
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®
ABS, BAS or ESP .
you accelerate hard, e.g. kickdown.
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you brake hard.
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you steer actively, e.g. swerve to avoid an
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obstacle or change lanes quickly.
you cut the corner on a sharp bend.
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In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
you approach the outer lane marking on a
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bend.
the road has very wide lanes, e.g. a free-
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way.
the system recognizes solid lane markings.
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The warning vibration occurs later if:
the road has narrow lanes.
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you cut the corner on a bend.
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