Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 154)

Problems with fuel and the fuel tank
Problem Possible causes/consequences and M Solutions
Fuel is leaking from the
vehicle.
G Risk of explosion or fire
The fuel line or the fuel tank is defective.
X Turn the SmartKey to position 0(
Y
page 139) in the ignition lock
immediately and remove it.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop.
The fuel filler flap
cannot be opened.
The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X Unlock the vehicle (
Y
page 72).
or
X
Unlock the vehicle using the mechanical key (
Y
page 75).
The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult a qualified specialist workshop.
The engine will not
start.
The fuel tank of a vehicle with a diesel engine has been run
completely dry.
X
Refuel the vehicle with at least 5.3 US qt (5 liters) of diesel.
X Turn the ignition on for at least 10 seconds (
Y
page 139).
X Start the engine continuously for up to 10 seconds until it runs
smoothly.
If the engine does not start:
X Turn the ignition on again for approximately 10 seconds
(
Y
page 139).
X Start the engine again continuously for up to 10 seconds until
it runs smoothly.
If the engine does not start after three attempts:
X Consult a qualified specialist workshop.
DEF
Important notes on use
To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent DEF.
When the DEF supply has almost run out, the
Check Additive See Operator's
Manual message is shown in the
multifunction display.
When the DEF supply sinks to a minimum
level, the Remaining Starts: 16 message
is shown in the multifunction display.
152
Refueling
Driv
ing
and
pa
rki
ng