Mercedes-Benz ML320 Cdi Operator's Manual page 418

Problem
?
(USA only) The yellow engine malfunc-
tion indicator lamp comes on
±
(Canada only)
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
local requirements.
Possible cause/consequence Suggested solution
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 opera-
tion) mode ( page 198).
Practical hints
What to do if ...
Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Light Truck 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 identi-
fication 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.
417