Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 261)

Display messages Possible causes/consequences and M Solutions
h
Max. Speed 12 MPH
G Risk of accident
The Active Curve System is faulty. The vehicle's handling
characteristics are severely impaired.
In addition, the vehicle level display appears between the vehicle
icon and the display message, and a warning tone sounds.
X Do not drive faster than 12 mph (20 km/h).
X Adjust your driving style to the altered handling characteristics.
X Visit a qualified specialist workshop immediately.
Ã
Inoperative
DSR (Downhill Speed Regulation) is deactivated due to a
malfunction.
X
Have DSR checked at a qualified specialist workshop.
HOLD
Off The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later (
Y
page 179).
Radar Sensors
Deactivated See
Operator's Manual
The radar sensor system is deactivated.
X Switch on the radar sensor system (
Y
page 236).
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 electric 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.
Display messages
259
On-board
computer
and
displays
Z