Emission Control - Mercedes-Benz Light Truck ML 320 Operator's Manual

Synchronizing ESP
If the power supply was interrupted
(battery disconnected or empty), the
BAS/ESP malfunction indicator lamp
may be illuminated with the engine
running.
Turn steering wheel completely to the
left and then to the right. The BAS/ESP
malfunction indicator lamp should go
out.

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
authorized Mercedes-Benz light truck
dealer qualified 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
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
SFI control module.
If the "CHECK ENGINE" malfunction
indicator lamp comes on, have the
system checked at your authorized
Mercedes-Benz light truck dealer as
soon as possible.
With some exceptions, the control
module switches off the "CHECK
ENGINE" malfunction indicator lamp
if the condition, causing the lamp to
come on, no longer exists during three
consecutive cycles.
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.
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