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208 Driving and parking
The system may be impaired or may not function
in the following instances:
In snow, rain, fog, heavy spray, if there is
R
glare, direct sunlight, greatly varying light
conditions, reflections or strong shadows on
the carriageway.
Insufficient road illumination.
R
The windscreen in the area of the camera is
R
dirty, misted up, damaged or covered.
Absence of lane markings, or several unclear
R
lane markings, or if the markings change rap‐
idly.
The distance to the vehicle in front is too
R
small and the lane markings thus cannot be
detected.
The road is narrow and winding.
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Obstacles on the lane or projecting out into
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the lane.
The system does not provide assistance in the
following conditions:
On tight bends, junctions, toll stations,
R
roundabouts and when turning.
When towing a trailer.
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When actively changing lane without switch‐
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ing on the turn signal.
When the tyre pressure is too low.
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& WARNING Risk of accident if Active
Steering Assist unexpectedly stops func‐
tioning
If the system limitations of Active Steering
Assist are reached there is no guarantee that
the system will remain active or will keep the
vehicle in lane.
Always keep your hands on the steering
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wheel and observe the traffic carefully.
Always steer the vehicle paying atten‐
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tion to traffic conditions.
& WARNING Risk of accident if Active
Steering Assist unexpectedly intervenes
A malfunction in the detection of lane mark‐
ings and objects can occur.
This could cause unexpected steering inter‐
vention.
Steer according to traffic conditions.
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Activating Active Steering Assist
Requirements:
®
ESP
must be activated, but not intervening.
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Active Distance Assist DISTRONIC is activa‐
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ted.
If indicator lamp
1
is off: press button 2.
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