Mercedes-Benz SL 550 BlueEFFICIENCY, 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
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 operational again,
the
Adaptive Highbeam Assist Now Available
message is
displayed.
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.
! 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 498).
X
If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.
? The fan motor is faulty.
X
At coolant temperatures under 248 ‡(120 †), drive to the next
qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
238
Display messages
On-board computer and displays