Mercedes-Benz Coupe GT, Operator'S Manual

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Display messages Possible causes/consequences and M M Solutions
?
Coolant Low Stop Coolant Low Stop
Vehicle Turn Vehicle Turn
Engine Off Engine Off
The coolant is too hot. In addition, the ? warning lamp in the
instrument cluster lights up and a warning tone sounds.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Make sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.
X
Wait until the display message disappears before restarting the
engine. Otherwise, the engine could be damaged.
X
Pay attention to the coolant temperature display.
X
If the coolant temperature increases again, visit a qualified
specialist workshop immediately.
!
If the coolant temperature is over 248 ‡ (120 †), do not
continue driving. The engine will otherwise be damaged.
The poly-V-belt may have torn. A warning tone also sounds.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Check the poly-V-belt.
X
If the poly-V-belt is not damaged: do not start the engine
again until the display message disappears. Otherwise, the
engine could be damaged.
X
If the poly-V-belt is torn: do not continue driving. Consult a
qualified specialist workshop.
?
The engine fan is defective.
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
mountainous terrain) and stop-and-go driving.
Displays and operation
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