Mercedes-Benz GL Operator's Manual page 187

Problems with fuel and the fuel tank
This section provides descriptions of and solutions to safety-relevant problems.
Problem
Fuel is leaking from the
vehicle.
The engine does not
start.
The fuel filler flap
cannot be opened.
Possible causes/consequences and M M Solutions
The fuel line or the fuel tank is faulty.
G WARNING
Risk of explosion or fire.
Turn the SmartKey to position 0 in the ignition lock and remove
X
it immediately ( page 167).
Y
Do not restart the engine under any circumstances.
X
Consult a qualified specialist workshop.
X
The fuel tank of a vehicle with a diesel engine has been run
completely dry.
Refuel the vehicle with at least 5.3 US qt (5 liters) of diesel.
X
Turn the ignition on for approximately ten seconds
X
( page 167).
Y
Start the engine continuously for up to ten seconds until it runs
X
smoothly.
If the engine does not start:
Turn the ignition on again for approximately ten seconds
X
( page 167).
Y
Start the engine again continuously for up to ten seconds until
X
it runs smoothly.
If the engine does not start after three attempts:
Consult a qualified specialist workshop.
X
The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
Unlock the vehicle (
X
or
Unlock the vehicle using the mechanical key (
X
The fuel filler flap is unlocked, but the opening mechanism is
jammed.
Consult a qualified specialist workshop.
X
page 80).
Y
Refueling
185
page 82).
Y
Z