Mercedes-Benz S-Class Coupe Operator's Manual page 270

Display messages
268
Display messages
b
Switch On Headlamps
Adaptive Highbeam
Assist Plus Inoper‐
ative
Adaptive Highbeam
Assist Plus Cur‐
rently Unavailable
See Operator's Man‐
ual
Engine
Display messages
+
Check Coolant
Level See Opera‐
tor's Manual
?
Possible causes/consequences and M Solutions
You are driving with low-beam headlamps switched off.
Turn the light switch to position L or Ã.
X
Adaptive Highbeam Assist Plus is faulty.
Visit a qualified specialist workshop.
X
Adaptive Highbeam Assist Plus is deactivated and temporarily
inoperative. Possible causes are:
the windshield in the camera's field of vision is dirty.
R
visibility is impaired due to heavy rain, snow or fog.
R
Clean the windshield.
X
If the system detects that the camera is fully operational again, the
Adaptive Highbeam Assist Plus Available Again
is displayed.
Adaptive Highbeam Assist Plus is operational again.
Possible causes/consequences and M Solutions
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.
Add coolant, observing the warning notes before doing so
X
( page 328).
Y
If you need to add coolant more often than usual, have the
X
engine coolant system checked at a qualified specialist work-
shop.
The fan motor is faulty.
At coolant temperatures below 257 ‡ (125 †), drive to the
X
nearest qualified specialist workshop.
Avoid subjecting the engine to heavy loads, e.g. driving in moun-
X
tainous terrain, and stop-and-go traffic.
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