Mercedes-Benz A-Class 2020 Operator's Manual page 179

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 bends and when turning.
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When crossing intersections.
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At traffic circles or toll stations.
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When actively changing lane without switch‐
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ing on the turn signal indicator.
When the tire pressure is too low.
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Depending on the selected vehicle settings,
Active Steering Assist may be unavailable.
Observe the status display of Active Steering
Assist in the multifunction display
( page 178).
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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/deactivating Active Steering
Assist
Requirements:
ESP ® is activated, but is not intervening.
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Active Distance Assist DISTRONIC is activa‐
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ted.
Driving and parking 177
Multimedia system:
© Settings Quick Access
4 5 5
Select a Steering Assist.
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Function of Active Emergency Stop Assist
If the driver continually ignores the visual or
acoustic warning to put their hands on the steer‐
ing wheel, the Beginning Emergency Stop
sage appears in the multifunction display. If the
driver still does not respond, Active Distance
Assist DISTRONIC reduces the speed. The vehi‐
cle is decelerated in stages to a standstill.
Depending on the country, at speeds below
40 mph (60 km/h) the hazard warning lights
switch on automatically.
When the vehicle is stationary, the following
actions are carried out:
The vehicle is secured with the electric park‐
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ing brake
Active Distance Assist DISTRONIC is ended
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The vehicle is unlocked
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if possible, an emergency call is placed to
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the Mercedes-Benz emergency call center
mes‐