Mercedes-Benz M-Class Owner's Manual page 276

Display messages
Radar sensor
deactivated See
Owner's Manual
Lane Keeping
Assist currently
unavailable See
Owner's Man‐
ualorActive Lane
Keeping Assist cur‐
rently unavailable
See Owner's Manual
Lane Keeping
Assist inopera‐
tiveorActive Lane
Keeping Assist
inoperative
Possible causes/consequences and M Solutions
Vehicles with Becker
not connected, the radar sensor system is deactivated automati-
cally.
BAS PLUS, DISTRONIC PLUS, Blind Spot Assist or Active Blind
Spot Assist and PRE-SAFE
Connect the Becker
X
instructions.
The radar sensor system is deactivated.
Check whether or not the radar sensor system may be activated
X
( page 380).
Y
Switch on the radar sensor system (
X
Lane Keeping Assist or Active Lane Keeping Assist is deactivated
and temporarily inoperative. Possible causes:
the windscreen is dirty in the camera's field of vision.
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.
R
If the display message does not disappear:
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Apply the electric parking brake.
X
Clean the windscreen.
X
If the system detects that the camera is fully operational, the dis-
play message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again.
Lane Keeping Assist or Active Lane Keeping Assist is faulty.
Visit a qualified specialist workshop.
X
Display messages
®
MAP PILOT: if the Becker
®
Brake are not available.
®
MAP PILOT; see the separate operating
page 249).
Y
273
®
MAP PILOT is
Z