Mercedes-Benz E-class 1998 Emergency Operation - Manual (Page 22)

102
Emission Control
Certain systems of the engine serve to
keep the toxic components of the
exhaust gases within permissible limits
required by law.
These systems, of course, will function
properly only when maintained strictly
according to factory specifications.
Any adjustments on the engine should,
therefore, be carried out only by
qualified Mercedes-Benz authorized
dealer technicians. Engine adjustments
should not be altered in any way.
Moreover, the specified service jobs
must be carried out regularly according
to Mercedes-Benz servicing
requirements. For details refer to the
Service Booklet.
Warning!
Inhalation of exhaust gas is
hazardous to your health. All
exhaust gas contains carbon
monoxide, and inhaling it can cause
unconsciousness and lead to death.
Do not run the engine in confined
areas (such as a garage) which are
not properly ventilated. If you think
that exhaust gas fumes are entering
the vehicle while driving, have the
cause determined and corrected
immediately. If you must drive
under these conditions, drive only
with at least one window fully open.
On-Board Diagnostic System
Vehicles with Diesel engine
When the "CHECK ENGINE" mal-
function indicator lamp comes on while
the engine is running, this indicates a
malfunction in the fuel injection system.
Only partial engine output is available.
Have the system checked at your
authorized Mercedes-Benz dealer as
soon as possible.
Vehicles with gasoline engine
The Sequential Multiport Fuel Injection
(SFI) control module monitors emission
control components that either provide
input signals to or receive output signals
from the control module. Malfunctions
resulting from interruptions or failure of
any of these components are indicated
by the "CHECK ENGINE" malfunction
indicator lamp in the instrument cluster
and are simultaneously stored in the
diagnostic module.
If the "CHECK ENGINE" malfunction
indicator lamp comes on, have the
system checked at your authorized
Mercedes-Benz dealer as soon as
possible.
The control module switches off the
"CHECK ENGINE" indicator lamp if the
condition, causing the lamp to come on,
no longer exists.
An on-board diagnostic connector is
located in the passenger compartment
near to the parking brake pedal,
allowing the accurate identification of
system malfunctions through the readout
of diagnostic trouble codes.