Mercedes-Benz GLC Owner's Manual page 209

Refuelling
206
Problems with the fuel and fuel tank
Problem
Fuel is leaking from the
vehicle.
The engine does not
start.
The fuel filler flap can-
not be opened.
Possible causes/consequences and M M Solutions
G WARNING
The fuel line or the fuel tank is faulty.
There is a risk of fire or explosion.
Apply the electric parking brake.
X
Switch off the engine.
X
Remove the key from the ignition lock.
X
or, on vehicles with KEYLESS-GO start function or KEYLESS‑GO:
Open the driver's door.
X
The on-board electronics now have status 0. This is the same as
the key having been removed.
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 com-
pletely dry.
Refuel the vehicle with at least 5 litres of diesel.
X
Turn the ignition on for approximately ten seconds
X
( page 187).
Y
Start the engine continuously for a maximum of ten seconds
X
until it runs smoothly.
If the engine does not start:
Turn the ignition on again a maximum of ten seconds
X
( page 187).
Y
Start the engine again continuously for a maximum of ten sec-
X
onds until 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.
Unlock the vehicle (
X
The key battery is discharged or nearly discharged.
Unlock the vehicle using the emergency key element
X
( page 97).
Y
The fuel filler flap is unlocked, but the opening mechanism is jam-
med.
Consult a qualified specialist workshop.
X
page 95).
Y