Mercedes-Benz C-Coupe 2012 Owners Manual - Manual (Page 219)

Display messages Possible causes/consequences and M Solutions
Radar Sensors
Deactivated See
Operator's Manual
The radar sensor system is deactivated.
X Switch on the radar sensor system ( Y page 196).
Lane Keeping
Assist Currently
Unavailable See
Operator's Manual
or Active Lane
Keeping Assist
Currently
Unavailable See
Operator's Manual
Lane Keeping Assist or Active Lane Keeping Assist is deactivated
and temporarily inoperative. Possible causes are:
R the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
R
there are no lane markings for a longer period.
R
the lane markings are worn, dark or covered, e.g. by dirt or snow.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the parking brake.
X Clean the windshield.
If the system detects that the camera is fully operational, the
display message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again.
Lane Keeping
Assist Inoperative
or Active Lane
Keeping Assist
Inoperative
Lane Keeping Assist or Active Lane Keeping Assist is defective.
X Visit a qualified specialist workshop.
Display messages
217
On-board computer and displays
Z