Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 212

210 Driving and parking
If a lane-correcting brake application occurs, dis‐
play 1 appears in the multifunction display.
System limitations
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 with Driving Assistance package 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-cor‐
recting brake application occurs.