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In such cases, Active Lane Keeping Assist
can:
give an unnecessary warning and then
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make a course-correcting brake application
to the vehicle
neither give a warning nor intervene
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There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not function
in the following situations:
poor visibility, e.g. due to insufficient illumi-
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nation of the road, or due to snow, rain, fog or
spray
glare, e.g. from oncoming traffic, the sun or
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reflection from other vehicles (e.g. if the road
surface is wet)
the windscreen is dirty, misted up, damaged
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or covered, for instance by a sticker, in the
vicinity of the camera
the radar sensors in the front or rear bumpers
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or the radiator trim are dirty, e.g. obscured by
snow
no or several, unclear lane markings are pres-
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ent for one lane, e.g. in a construction area
the lane markings are worn away, dark or cov-
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ered up, e.g. by dirt or snow
the distance to the vehicle in front is so small
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that the lane markings cannot be detected
the lane markings change quickly, e.g. lanes
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branch off, cross one another or merge
the road is very narrow and winding
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there are highly variable shade conditions on
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the roadway
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made.
Warning vibration through the steering
wheel
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
Lane-correcting brake application
If you leave your lane, under certain circumstan-
ces, the vehicle will brake briefly on one side.
This is intended to help you return the vehicle to
the original lane.
G
WARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
If a lane-correcting brake application occurs,
display : appears on the multifunction display.
The brake application also slightly reduces driv-
ing speed.
A lane-correcting brake application can be made
after the car has passed over a lane marking
detected as being solid or broken. Before this, a
warning must have been issued by means of
intermittent vibration through the steering
wheel. In addition, a lane with lane markings on
both sides must be detected.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can be made only if a vehicle has been detected
in the adjacent lane. Oncoming vehicles, over-
taking vehicles and vehicles in adjacent lanes
can be detected.
A further lane-correcting brake application can
occur only after your vehicle has returned to the
original lane.
No lane-correcting brake application occurs in
the following situations:
you clearly and actively steer, brake or accel-
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erate
you cut the corner on a sharp bend
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Driving systems
211
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