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Practical hints
What to do if …?
Problem Possible cause Suggested solution
?
(USA only)
±
(Canada only)
The yellow malfunction
indicator lamp comes on
while driving.
There is a malfunction in:
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 en-
gine to its limp-home (emergency opera-
tion) mode.
̈ Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Center.
An on-board diagnostic connector is
used by the service station to link the
vehicle to the shop diagnostics system.
It allows the accurate identification of
system malfunctions through the read-
out of diagnostic trouble codes. It is lo-
cated in the front left area of the
footwell next to the parking brake pedal.
The fuel cap is not closed tightly. ̈ Close the fuel cap.
Your gas 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.