Mercedes-Benz GLE Owner's Manual page 242

If the system reaches a system limitation or the
driver has not steered the vehicle for a consider‐
able period of time or has removed their hands
from the steering wheel, the system will,
depending on the situation, first alert the driver
with a visual warning. Display
multifunction display. If the driver still does not
steer the vehicle, or has still not taken hold of
the steering wheel, a repeated warning tone
sounds in addition to the visual warning mes‐
sage to remind the driver to take control of the
vehicle.
The warning message does not appear or disap‐
pears if one of the following conditions are met:
The driver steers the vehicle.
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The driver presses a steering wheel button or
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operates Touch Control.
Active Steering Assist is only an aid. The driver is
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane. Before changing lanes,
the driver must make sure that the neighbouring
lane is free (glance over the shoulder).
System limitations of Active Steering Assist
Active Steering Assist has a limited steering tor‐
que for lateral guidance. In some cases, the
steering intervention is not sufficient to keep the
vehicle in the lane.
If the detection of lane markings and vehicles
1 appears in the
ahead is impaired, Active Steering Assist
switches to passive mode. The system provides
no support in this case. During the transition
from the active to passive status, the è sym‐
bol is shown as enlarged and flashes yellow.
Once the system is passive, the è symbol is
shown as grey in the multifunction display.
Driving and parking 239
The system may be impaired or may not function
in the following situations:
If there is poor visibility, e.g. due to insuffi‐
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cient illumination of the road, or due to snow,
rain, fog or heavy spray.
If there is glare, e.g. from oncoming traffic,
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direct sunlight or reflections (e.g. if the road
surface is wet).
If the windscreen is dirty, misted up, dam‐
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aged or covered, for instance by a sticker, in
the vicinity of the camera.
If no, or several, unclear lane markings are
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present for one lane, e.g. in a construction
area.
If the lane markings are worn away, dark or
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covered up, e.g. by dirt or snow.
If the distance to the vehicle in front is too
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small and the lane markings thus cannot be
detected.
If the lane markings change quickly, e.g.
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lanes branch off, cross one another or
merge.
If the roadway is narrow and windy.
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