Mercedes-Benz 2004 ML 500 - Manual (Page 248)

248
Practical hints
What to do if …
Problem Possible cause Suggested solution
?
The yellow “CHECK ENGINE”
malfunction indicator lamp
comes on while driving. There is a malfunction of:
ț The fuel management system
ț The ignition system
ț The emission control system
ț Systems which affect emissions
Such malfunctions may result in excessive
emissions values and may switch the engine
to its limp-home (emergency operation)
mode.
̈ Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Light Truck Center.
An on-board diagnostic connector is
used by the service station to link the
vehicle to the shop diagnostics sys-
tem. It allows the accurate identifica-
tion of system malfunctions through
the readout of diagnostic trouble
codes. It is located in the front left
area of the footwell next to the park-
ing brake pedal.
The fuel cap is not closed tightly. Check the fuel cap ( ୴ page 214).
Your fuel tank is empty. ̈ After refuelling start the engine three
or four times in succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.