Active Lane Keeping Assist - Mercedes-Benz GLC Operator's Manual

Driving systems
212

Active Lane Keeping Assist

General notes
Active Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunction
camera : at the top of the windshield. Various
different areas to the front, rear and side of your
vehicle are also monitored with the aid of the
radar sensor system. Active Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin-
tentionally. If you do not react to the warning, a
lane-correcting application of the brakes can
bring the vehicle back into the original lane.
This function is available in the range between
40 mph and 120 mph (60 km/h and 200 km/h).
Important safety notes
If you fail to adapt your driving style, Active Lane
Keeping Assist can neither reduce the risk of an
accident nor override the laws of physics. Active
Lane Keeping Assist cannot take account of
road and weather conditions. It may not recog-
nize traffic situations. Active Lane Keeping
Assist is only 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.
Active Lane Keeping Assist cannot continuously
keep your vehicle in its lane.
G
WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
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
not give a warning or 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
if:
there is poor visibility, e.g. due to insufficient
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illumination of the road, or due to snow, rain,
fog or heavy spray
there is glare, e.g. from oncoming traffic, the
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sun or reflection from other vehicles (e.g. if
the road surface is wet)
the windshield is dirty, fogged up, damaged or
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covered, for instance by a sticker, in the vicin-
ity 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
there are no or several unclear lane markings
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for one lane, e.g. roadworks
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 too short
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and thus the lane markings cannot be detec-
ted
the lane markings change quickly, e.g. lanes
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branch off, cross one another or merge
the road is 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 in 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.