Warning Lamp - Mercedes-Benz G-Class Operator's Manual

Warning and indicator lamps in the instrument cluster
210
Engine
Problem
;
The yellow Check Engine
warning lamp lights up
while the engine is run-
ning.
8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
8
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the ;
Check Engine warning
lamp may light up.
?
The red coolant warning
lamp lights up while the
engine is running and the
coolant temperature
gage is at the start of the
scale.
Possible causes/consequences and M Solutions
There may be a malfunction, for example:
in the engine management
R
in the fuel injection system
R
in the exhaust system
R
in the ignition system
R
in the fuel system
R
The emission limit values may be exceeded and the engine may be in
emergency mode.
Have the vehicle checked as soon as possible at a qualified spe-
X
cialist workshop.
i
In some states, you must immediately visit a qualified specialist
workshop as soon as the yellow Check Engine warning lamp lights
up. This is due to the legal requirements in effect in these states. If
in doubt, check whether such legal regulations apply in the state in
which you are currently driving.
The fuel level has dropped into the reserve range.
Refuel at the nearest gas station.
X
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
Check that the fuel filler cap is correctly closed.
X
If the fuel filler cap is not correctly closed: close the fuel filler
X
cap.
If the fuel filler cap is closed: visit a qualified specialist workshop.
X
The temperature sensor for the coolant temperature gage is defective.
The coolant temperature is no longer being monitored. There is a risk
of engine damage if the coolant temperature is too high.
Pull over and stop the vehicle safely and switch off the engine, pay-
X
ing attention to road and traffic conditions. Do not continue driving
under any circumstances.
Apply the parking brake.
X
Consult a qualified specialist workshop.
X