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Practical hints
What to do if …?
Problem Possible cause/consequence Suggested solution
ú
±
(USA only)
(Canada only)
The yellow engine
malfunction indi-
cator 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 ex-
cessive emissions values and may
switch the engine to its Limp-Home
Mode (emergency operation).
̈ Have the vehicle checked as soon as possi-
ble 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 accu-
rate identification of system malfunctions
through the readout of diagnostic trouble
codes. It is located in the front left area of the
footwell next to the parking brake pedal.
A loss of pressure has been
detected in the fuel system. The fuel
cap may not be closed properly or
the fuel system may be leaky.
̈ Check the fuel cap (୴ page 318).
If it is not closed properly:
̈ Close the fuel cap.
If it is closed properly:
̈ Have the fuel system checked by an autho-
rized Mercedes-Benz Center.
Your fuel tank is empty. ̈ After refuelling, 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.