Mercedes-Benz ML320 Cdi Operator's Manual page 419

Practical hints
What to do if ...
Problem
?
(USA only) The yellow engine malfunction
indicator lamp comes on while
±
(Canada only)
driving.
418
Possible cause/conse-
quence
A loss of pressure has been
detected in the fuel system.
The fuel cap may not be closed
properly.
The fuel system may be leaky.
Your fuel tank is empty.
Suggested solution
Check the fuel cap ( page 352).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Light Truck
Center.
After refueling start, turn off and
restart the engine three or four times in
succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.