Mercedes-Benz S-Class 2020 Operator's Manual page 262

260 Driving and parking
If a lane-correcting brake application occurs, dis‐
play 1 appears in the multifunction display.
Sensitivity of Active Lane Keeping Assist
% The availability of the following function is
country-dependent.
A lane-correcting brake application also occurs
in the Sensitive setting in the following situa‐
tions:
Active Lane Keeping Assist detects a solid
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lane marking.
A front wheel drives over this lane marking.
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System limits
No lane-correcting brake application occurs in
the following situations:
You clearly and actively steer, brake or accel‐
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erate.
You have switched on the turn signal indica‐
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tor (situation-dependent).
A driving safety system intervenes, such as
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ESP ® , Active Brake Assist or Active Blind
Spot Assist.
You have adopted a sporty driving style with
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high cornering speeds or high rates of accel‐
eration.
®
When ESP is deactivated.
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If a loss of tire pressure or a faulty tire has
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been detected and displayed.
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, if there are
highly variable shade conditions or in rain,
snow, fog or heavy spray.
If there is glare, e.g. from oncoming traffic,
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the sun or reflections.
If the windshield in the area of the multifunc‐
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tion camera is dirty, or if the camera is fog‐
ged up, damaged or covered.
If there are no lane markings, or several
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unclear lane markings are present for one
lane, e.g. around roadworks.
If the lane markings are worn, dark or cov‐
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ered.
If the distance to the vehicle in front is too
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short and thus the lane markings 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 very narrow and winding.
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Vehicles without Driving Assistance Pack‐
age or Driving Assistance Plus Package:
Active Lane Keeping Assist uses radar sensors
to monitor several areas around the vehicle. If
the radar sensors in the rear bumper are dirty or
covered with snow, the system may be impaired
or may not function. If an obstacle in the lane in
which you are driving has been detected, no
lane-correcting brake application occurs.