Mercedes-Benz S-Class Coupe 2018 Operator's Manual page 423

Display messages
Malfunction Drive at Max.
50 mph
Active Lane Keeping Assist
Currently Unavailable See
Operator's Manual
Active Lane Keeping Assist
Inoperative
Possible causes/consequences and
* The AIR BODY CONTROL function is restricted. The vehicle's handling characteristics may be affected.
* NOTE The tires of the front axle or the front fenders could be damaged by large steering movements
Avoid large steering movements while driving and listen for scraping sounds.
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If you hear scraping sounds, pull over and stop the vehicle safely, paying attention to road and traffic con‐
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ditions, and set a higher vehicle level if possible.
Do not drive faster than 50 mph (80 km/h).
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Visit a qualified specialist workshop.
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* Active Lane Keeping Assist is temporarily unavailable.
The ambient conditions are outside the system limitations (
Vehicles with Active Steering Assist: The camera view may be restricted by the windshield.
Drive on.
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As soon as the ambient conditions are within the system limitations, the system will become available again.
If the display message does not disappear on vehicles with Active Steering Assist:
Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions.
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Clean the windshield.
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* Active Lane Keeping Assist is malfunctioning.
Visit a qualified specialist workshop.
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Display messages and warning/indicator lamps 421
M Solutions
page 201).
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