Mercedes-Benz G-Class, Owner'S Manual

Page: 126 / 208

Problem Possible causes/consequences and
M
Solutions
+
The red coolant warn-
ing lamp lights up while
the engine is running.
If the warning lamp lights up regularly, the engine cooling system
is leaking.
X
Have the engine cooling system checked at a qualified specialist
workshop.
+
The red coolant warn-
ing lamp lights up while
the engine is running.
If the coolant level is correct, the radiator fan may be faulty.
X
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop/start driving.
4
The red oil level warn-
ing lamp lights up while
the engine is running.
The engine oil level has dropped to a critical level. There is a danger
of engine damage.
X
Check the engine oil level (
Y
page 142) and top up the oil if
necessary (
Y
page 143).
X
Have the engine checked for leaks if the engine oil needs top-
ping up more often than usual.
:
The yellow fuel/water
separator warning lamp
lights up while the
engine is running.
The amount of water that has settled in the water separator has
reached the maximum level. The water must be drained off.
X Visit a qualified specialist workshop immediately.
È
The yellow air filter
warning lamp lights up
while the engine is run-
ning.
The engine air filter is dirty.
X
Have the air-cleaner filter element replaced as soon as possible
at a qualified specialist workshop.
The air filter drain hoses are dirty.
X
Clean the air filter drain hoses.
124
Warning and indicator lamps in the instrument cluster
Display and display messages