Practical hints
What to do if ...?
Problem
ú
(USA only)
The yellow engine
malfunction indi-
±
(Canada only)
cator lamp comes
on while driving.
i
In some states you may be required by
law to have the vehicle serviced imme-
diately as soon as the engine malfunc-
tion indicator lamp comes on. Check
local requirements.
362
Possible cause/consequence
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).
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.