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Practical hints
What to do if …
Problem Possible cause/consequence Suggested solution
ú (USA only)
± (Canada only)
The yellow engine mal-
function indicator lamp
comes on while driving.
There may be a malfunction in the
ț fuel management system
ț ignition system (gasoline engine)
ț 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 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
accurate identification of system malfunc-
tions through the readout of diagnostic trou-
ble codes. It is located in the front left area
of the footwell next to the parking brake.
i
Some states may by law require you to visit
a workshop immediately as soon as the engine
malfunction indicator lamp comes on. Check lo-
cal requirements.