Mercedes-Benz 2007 E -Class Wagon Operator's Manual page 383

Practical hints
What to do if ...
Problem
ú
(USA only)
±
(Canada only)
The yellow engine mal-
function indicator lamp
comes on while driving.
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.
382
Possible cause/consequence
There may be a malfunction in the
fuel management system
ignition system
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 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.