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Practical hints
What to do if ...?
Problem
?
(USA only)
The yellow engine
malfunction indi-
±
(Canada only)
cator lamp comes
on while driving.
356
Possible cause
There is a malfunction in:
The fuel management system
The ignition system
The emission control system
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).
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.
Your fuel tank is empty.
Suggested solution
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.
Check the fuel cap ( page 305).
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.
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.
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