Mercedes-Benz ML 320 BlueTEC, Operator'S Manual

Page: 347 / 424

What to do if …
345
Engine
Problem Possible cause/consequence Suggested solutions
?
(USA only)
±
(Canada only)
The yellow engine malfunction
indicator lamp comes on when
the engine is running.
There may be a malfunction in:
R
The fuel management system
R
The ignition system
R
The emission control system
R
Systems which affect
emissions
Such malfunctions may result in
excessive emissions values and
may switch the engine to limp-
home (emergency operation)
mode.
X
Have the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i Some states may by law require you to visit a workshop as soon
as the engine malfunction indicator lamp comes on. Check local
requirements.
?
(USA only)
±
(Canada only)
The yellow engine malfunction
indicator lamp comes on when
the engine is running.
A loss of pressure has been
detected in the fuel system. The
fuel cap may not be closed
properly or the fuel system may
be leaky.
X
Check the fuel cap (
Y
page 237).
X
If it is not closed properly: Close the fuel cap.
X
If it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center.
Diesel engine: Your fuel tank was
driven empty.
X
After refueling, start, turn off and restart the engine three or four
times in succession.
The limp-home mode is canceled. You do not need to have your
vehicle checked.
Practical hints
Z