Mercedes-Benz 2012C-Class Sedan, Operator'S Manual

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Display messages Possible causes/consequences and
M
Solutions
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.
Engine
Display messages Possible causes/consequences and
M
Solutions
+
Check Coolant
Level See
Operator's Manual
The coolant level is too low.
X
Add coolant, observing the warning notes when doing so
(
Y
page 280).
X
If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.
G
WARNING
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
!
The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
Display messages
225
On-board computer and displays
Z