Mercedes-Benz A-Class 2021 Operator's Manual page 170

168 Driving and parking
is responsible for complying with road traffic
regulations and driving at a suitable speed.
The speed adaptation made by the system may
not always be suitable, particularly in the follow‐
ing situations:
The road's course not clearly visible
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Road narrowing
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Varying maximum permissible speeds in indi‐
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vidual lanes
Wet road surfaces, snow or ice
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In these situations the driver must intervene
accordingly.
& WARNING Risk of accident in spite of
route-based speed adaptation
Route-based speed adaptation can malfunc‐
tion or be temporarily unavailable in the fol‐
lowing situations:
If the driver does not follow the calcula‐
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ted route
If map data is not up-to-date or available
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In the event of roadworks
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In bad weather or road conditions
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If the accelerator pedal is depressed
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In the event of electronically displayed
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speed limitations
Adapt the speed to the traffic situation.
#
Setting route-based speed adaptation
Requirements:
Active Distance Assist DISTRONIC is activa‐
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ted.
ECO Assist is active.
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Multimedia system:
© Settings Assistance
4 5 5
Route-based Speed
5
Activate or deactivate the function.
#
When the function is active, the vehicle
speed is adjusted depending on the route
events ahead.
% Further information on the route-based
speed adaptation ( page 167).
/
Active Steering Assist
Function of Active Steering Assist
Active Steering Assist is only available up to a
speed of 130 mph (210 km/h). The system helps
you to stay in the center of the lane by means of
moderate steering interventions. Depending on
the speed driven, Active Steering Assist uses the
vehicles ahead and lane markings as a refer‐
ence.
%
Depending on the country, in the lower
speed range Active Steering Assist can use
the surrounding traffic as a reference. If nec‐
essary, Active Steering Assist can then also
provide assistance when driving away from
the center of the lane, for example, to form a
rescue lane.
If the detection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches to passive mode. The system provides
no support in this case.
Status display of Active Steering Assist in
the multifunction display
Ø (gray): activated and passive
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Ø (green): activated and active
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