Parts/Operating Materials; Emission System Maintenance; Gasoline Engines; Emission Control System Caution - Gasoline Engines - SMART fortwo coupe Maintenance Booklet

Parts/Operating materials

We recommend only the use of Genuine smart
parts for service and repairs, since they
meet our specifications. It is also
important to only use fuels, lubricants and
anticorrosion/antifreeze coolant meeting
factory specifications. Please see your
authorized smart Center for more
information on this subject.

Emission System Maintenance

Gasoline Engines

The U.S. Environmental Protection Agency
and, in California, the Air Resources Board
have certified that the emission control
systems of your vehicle comply with the
applicable exhaust emission standards for
MY 2013 vehicles.
To be certain that the emission control
systems function as designed, regular
maintenance is necessary for components
of the vehicle which affect exhaust and
evaporative emissions composition.
The vehicle owner is responsible for the
regular maintenance of the emission
control system, as well as the use of
premium unleaded gasoline with an anti-
knock index of at least 91 (displayed on the
pump) in all gasoline engine models unless
otherwise specified.
Failure to properly maintain the emission
system may result in repairs not being
covered by the emission system warranties.
Explanations of each maintenance job are
given on ( page 8).
Y
Emission Control System Caution –
Gasoline Engines
Your smart vehicle is equipped with both a
three-way catalyst and a closed loop oxygen
sensor system to comply with current
G
WARNING
Emission System Maintenance
exhaust emission regulations. Keep your
vehicle in proper operating condition by
following our recommended maintenance
instructions as outlined.
The following must be adhered to:
a) In all gasoline engine models, use only
premium unleaded gasoline with an anti-
knock index of at least 91 (as displayed on
the pump) unless otherwise specified.
Damage to the engine could occur if
premium unleaded fuel is not used. Refer
to the Operator's Manual for special
precautions.
b) Leaded gasoline should not be used
under any circumstances. Damage to the
emission control components will result.
c) The specified engine maintenance jobs
must be performed completely and at the
required intervals. Properly functioning
spark plugs for instance are important for
the service life of the catalysts. Failure to
properly perform the specified
maintenance jobs may adversely affect the
emission control system on the vehicle and
reduce its service life.
d) The operation of the emission control
system must not be altered in any way.
Alterations are not permissible by law. In
addition, alterations may result in damage
to the catalysts, increased fuel
consumption, and impaired engine running
conditions.
e) Irregular engine running conditions
should be corrected immediately by an
authorized smart Center. Such irregular
running conditions can influence the
proper function of the emission control
system.
If the check engine indicator lamp in the
instrument cluster illuminates when the
engine is running, it indicates a possible
malfunction of the engine management
system or emission control system.
We recommend that you have the
malfunction checked as soon as possible.
Please make sure you read the technical documentation, such
as the Operator's Manual and workshop information, before
carrying out any maintenance work.
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