Mercedes-Benz S-Class 2020 Owner's Manual page 542

Display messages
Active Lane Keeping Assist
inoperative
¸
ð
ç
Ä
Currently unavailable
Radar dirty
Possible causes/consequences and
As soon as the ambient conditions are within the system limits, the system will become available again.
Drive on.
#
* Active Lane Keeping Assist is malfunctioning.
Consult a qualified specialist workshop.
#
* Front and corner radar sensors and/or lidar (hereafter "sensors") are malfunctioning. Possible causes:
The sensors are dirty
R
Heavy rain or snow
R
Extended country driving without other traffic, e.g. in the desert
R
Driving systems and driving safety systems may be malfunctioning or temporarily unavailable. The brake system,
steering and drive system will continue to function normally.
Drive on.
#
Once the causes of the problem are no longer present, the driving systems and driving safety systems will be avail‐
able again and the corresponding symbols will be switched off.
If the display message does not disappear:
Stop the vehicle in accordance with the traffic conditions.
#
Clean all sensor covers from outside (
#
Restart the engine.
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Display messages and warning/indicator lamps 539
M M Solutions
page 231).
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