Mercedes-Benz R-Class Owner's Manual page 291

Practical advice
Troubleshooting
Fuel and fuel tank
Problem
Fuel is leaking from the vehicle.
The fuel filler flap cannot be
opened.
288
Possible cause/consequence
G Risk of explosion or fire
The fuel line or the fuel tank is
defective.
The fuel filler flap is not released.
The batteries in the vehicle key or
the KEYLESS GO key* are dis-
charged.
The fuel filler flap is released, but
the opening mechanism is jam-
med.
Suggested solutions
Turn the key to position 0 (
X
Y
ately and remove it.
Do not restart the engine under any circumstances.
X
Consult a qualified specialist workshop.
X
Unlock the vehicle using the emergency key element
X
( page 302).
Y
Open the tailgate ( page 71).
X
Y
Manually unlock the fuel filler flap via the emergency release
X
( page 303).
Y
Consult a qualified specialist workshop.
X
page 76) in the ignition lock immedi-
* optional