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Practical hints
What to do if …
Problem Possible cause/conse-
quence
Suggested solution
? (USA only)
± (Canada only)
The yellow engine malfunction
indicator lamp comes on while
driving.
There is a malfunction in:
ț The fuel management
system
ț The ignition system
ț The emission control
system
ț Systems which affect
emissions
Such malfunctions may result
in excessive emissions values
and may switch the engine to
its limp-home (emergency
operation) mode.
̈ 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 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.
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.