Mercedes-Benz G 550 2015 Operator's Manual page 170

Warning and indicator lamps in the instrument cluster
168
Engine
Problem
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
Possible causes/consequences and M Solutions
The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
G
WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
Observe the additional display messages in the multifunction
X
display.
Pull over and stop the vehicle safely and switch off the engine,
X
paying attention to road and traffic conditions.
Secure the vehicle against rolling away (
X
Leave the vehicle and keep a safe distance from the vehicle until
X
the engine has cooled down.
Check the coolant level and add coolant, observing the warning
X
notes ( page 208).
Y
If you need to add coolant more often than usual, have the
X
engine coolant system checked.
Make sure that the air supply to the engine radiator is not
X
blocked, e.g. by snow, slush or ice.
At coolant temperatures below 248 ‡ (120 †), 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-start driving.
page 110).
Y