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
You leave the vehicle and the light is still switched on. A warning
tone also sounds.
X
Turn the light switch to position 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 inoper-
ative. 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 operational again, the
Adaptive
Highbeam Assist Now Available message appears.
Adaptive Highbeam Assist is operational again.
Engine
Display messages
Possible causes/consequences and M Solutions
+
Check Coolant
Level See Opera‐
tor's Manual
The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X
Add coolant, observing the warning notes before doing so
(
Y page 279).
X
If you need to add coolant more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop.
?
The fan motor is faulty.
X
At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
Display messages
227
On-board computer and displays
Z
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