Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 255)

Display messages Possible causes/consequences and M Solutions
b
Check Left Daytime
Running
Light or Check
Right Daytime
Running Light
The left or right-hand daytime running lamp is defective.
X Check whether you are permitted to change the bulb yourself
(
Y
page 114).
or
X Visit a qualified specialist workshop.
b
Active Headlamps
Inoperative
The active light function is defective.
X
Visit a qualified specialist workshop.
b
Malfunction See
Operator's Manual
The exterior lighting is defective.
X Visit a qualified specialist workshop.
b
AUTO Lamp Function
Inoperative
The light sensor is defective.
X Visit a qualified specialist workshop.
b
Switch Off Lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X Turn the light switch to c or Ã.
Adaptive Highbeam
Assist Inoperative
Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop.
Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual
Adaptive Highbeam 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.
X Clean the windshield.
If the system detects that the camera is fully functional again, the
Adaptive Highbeam Assist Now Available display message
is shown.
Adaptive Highbeam Assist is operational again.
Display messages
253
On-boa
rd
comp
uter
and
disp
lays
Z