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172 Driving and parking
172
ing intervention is not su cient to keep the vehi-
cle in the lane or to drive through exits.
The system may be impaired or may not function
in the following instances:
There is poor visibility, e.g. due to snow, rain,
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fog, heavy spray, greatly varying ambient light
or strong shadows on the road.
There is glare, e.g. from oncoming tra c,
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direct sunlight or re ections.
Insu cient road illumination.
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The windshield is dirty, fogged up, damaged or
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covered in the vicinity of the camera, e.g. by a
sticker.
No, or several, unclear lane markings are pres-
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ent for one lane, or the markings change
quickly, forexample, in a construction area or
intersections.
The lane markings are worn away, dark or cov-
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ered up, e.g. by dirt or snow.
If the distance to the vehicle in front is too
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short and thus the lane markings cannot be
detected.
The road is narrow and winding.
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There are obstacles on the lane or projecting
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out into the lane, suchas object markers.
The system does not provide assistance in the fol-
lowing conditions:
On tight bends and when turning.
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When crossing intersections.
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At tra c circles or toll stations.
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When the tire pressure is too low.
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& W W ARNING
ARNING Risk of accident if Active Steer-
ing Assist unexpectedly stops functioning
If the system limits of Active Steering Assist
are reached there is no guarantee that the
system will remain active or will keep the vehi-
cle in lane.
Always keep your hands on the steering
#
wheel and observe the tra c carefully.
Always steer the vehicle paying attention
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to tra c conditions.
& W W ARNING
ARNING Risk of accident if Active Steer-
ing Assist unexpectedly intervenes
The detection of lane markings and objects
may malfunction and cause unexpected steer-
ing interventions.
Steer according to tra c conditions.
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A A ctiv
ctivating A
ating Activ
ctive St
e Steer
eering Assist
ing Assist
R R eq equir uirements:
ements:
®
ESP
must be activated, but not intervening.
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Active Distance Assist DISTRONIC is activa-
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ted.
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