Mercedes-Benz C-CLASS WAGON C 240 Operator's Manual page 348

Practical hints
What to do if ...
Problem
ú
(USA only) The yellow engine malfunction
indicator lamp comes on while
±
(Canada only)
driving.
346
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 excessive emissions values
and may switch the engine to
its limp-home (emergency
operation) mode.
Suggested solution
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 identifi-
cation 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.