Mercedes-Benz A-Class Operator's Manual page 198

196 Driving and parking
accident nor override the laws of physics. It can‐
not take into account road, weather or traffic
conditions. Active Lane Keeping Assist is only an
aid. You are responsible for the distance to the
vehicle in front, for vehicle speed, for braking in
good time and for staying in lane.
If the lane markings are solid lines, a lane-cor‐
recting brake application can bring the vehicle
back into the original lane.
Vehicles with Driving Assistance package:
Active Lane Keeping Assist can bring the vehicle
back into the lane with a lane-correcting brake
application. In the case of a broken lane marking
being detected, a brake application will only be
made if a vehicle has been detected in the adja‐
cent lane. Oncoming vehicles, overtaking vehi‐
cles and vehicles in adjacent lanes can be detec‐
ted.
The brake application is available in the speed
range between 40 mph (60 km/h) and 120 mph
(200 km/h).
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 defective tire
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has 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, highly variable
shade conditions, or due to rain, snow, fog or
heavy spray.
If there is glare, e.g. from oncoming traffic,
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the sun or reflections.
If there is dirt on the windshield in the vicin‐
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ity of the multifunction camera or the camera
is fogged up, damaged or obscured.
If there are no lane markings, or several
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unclear lane markings for one lane, e.g.
around construction sites.
If the lane markings are worn, dark or cov‐
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ered.