Mercedes-Benz GLA Series Operator's Manual page 183

The windshield is dirty, fogged up, damaged
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or covered in the vicinity of the camera, e.g.
by a sticker.
No, or several, unclear lane markings are
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present for one lane, or the markings change
quickly, for example, in a construction area
or intersections.
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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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, such as object markers.
The system does not provide assistance in the
following conditions:
On tight curves and when turning.
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When crossing intersections.
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At roundabouts or toll stations.
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When the tire pressure is too low.
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& WARNING Risk of accident if Active
Steering Assist unexpectedly stops func‐
tioning
If the system limits 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
The detection of lane markings and objects
may malfunction and cause unexpected
steering interventions.
Steer according to traffic conditions.
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Activating/deactivating Active Steering
Assist
Requirements:
ESP ® is activated, but is not intervening.
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Driving and parking 181
Active Distance Assist DISTRONIC is activa‐
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ted.
Multimedia system:
© Settings Quick Access
4 5 5
Select a Steering Assist.
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Function of Active Emergency Stop Assist
If the system detects that the driver has not
steered the vehicle for a considerable period of
time or has removed their hands from the steer‐
ing wheel, display 1 appears in the multifunc‐
tion display. If the driver still does not steer the
vehicle, or gives no confirmation to the system,