Mercedes-Benz G-Class Operator's Manual page 120

Driving
118
Problems with the engine
Problem
The engine does not
start. The starter motor
can be heard.
The engine does not
start. The starter motor
can be heard. The
yellow reserve fuel
warning lamp is on. The
fuel gauge needle is
pointing to the reserve
range and does not
drop any further.
The engine does not
start. You cannot hear
the starter motor.
Possible causes/consequences and M Solutions
There is a malfunction in the engine electronics.
R
There is a malfunction in the fuel supply.
R
X
Turn the SmartKey back to position 0 in the ignition lock before
attempting to start the engine again.
X
Try to start the engine again (
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X
Consult a qualified specialist workshop.
The fuel tank is empty.
X
Refuel the vehicle.
The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (
If the engine does not start despite attempts to jump-start it:
X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X
Try to start the engine again.
If the engine still does not start:
X
Consult a qualified specialist workshop.
Y page 115). Avoid excessively
Y page 233).