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detected, the warning lamp in the outside mirror
on the relevant side lights up red. If it detects a
critical situation, a warning tone also sounds.
Vehicles with Blind Spot Assist and Parking
Assist PARKTRONIC: drivers can also be warned
of any crossing traffic when backing up out of a
parking space. If a critical situation is detected, a
warning symbol appears on the camera image of
the multimedia system. If the driver does not
respond to the warning, the vehicle's brakes can
be applied automatically. In this case, a warning
tone sounds.
The Rear Cross Traffic Alert function is active
under the following conditions:
Blind Spot Assist is activated.
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Reverse gear is engaged or the vehicle is
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backing up at walking pace.
If the maneuvering assistance function is acti‐
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vated in the multimedia system.
The Rear Cross Traffic Alert function is unavaila‐
ble when driving with a trailer.
Lane Keeping Assist and Active Lane Keeping
Assist
Functions of Lane Keeping Assist
Lane Keeping Assist monitors the area in front of
your vehicle with multifunction camera 1. It
serves to protect you against unintentionally leav‐
ing your lane. You may also be warned by a
vibrating message from the steering wheel and by
the status symbol flashing in the instrument dis‐
play.
The warning is issued when the following condi‐
tions are met at the same time:
Lane Keeping Assist detects lane markings.
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A front wheel passes over the lane markings.
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You can activate and deactivate the Lane Keeping
Assist warning.
If you fail to adapt your driving style, Lane Keep‐
ing Assist can neither reduce the risk of accident
nor override the laws of physics. It cannot take
into account road, weather or traffic conditions.
Lane Keeping Assist is only an aid and is not
intended to keep the vehicle in the lane without
the driver's cooperation. You are responsible for
the distance to the vehicle in front, for vehicle
speed, braking in good time and for staying in
your lane.
System limitations
The system may be impaired or may not function
in the following situations:
There is poor visibility, e.g. due to insufficient
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illumination of the road, highly variable shade
conditions, or due to rain, snow, fog or heavy
spray.
Glare from oncoming traffic, direct sunlight or
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reflections.
There is dirt on the windshield in the vicinity
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of the multifunction camera or the camera is
fogged up, damaged or obscured.
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, dark or covered.
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The distance to the vehicle in front is too
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small, and therefore 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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Driving and parking 157
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