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Problem
?
(USA only)
The yellow engine malfunc-
tion indicator lamp comes
±
(Canada only)
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
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 identification of
system malfunctions through the read-
out of diagnostic trouble codes. It is lo-
cated in the front left area of the
footwell next to the parking brake pedal.
433
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