Description Of Emission System Maintenance Jobs; Changing The Engine Oil And Filter; Replacing The Air Filter; Replacing Spark Plugs - SMART fortwo coupe Maintenance Booklet

Maintenance service descriptions

8
Description of Emission System
Maintenance Jobs
The composition of exhaust emissions is
influenced not only by the special
emission control equipment, but also by
various engine components and their
adjustments.
Therefore, emission system maintenance
must include these engine components.
Some maintenance jobs are actually only
tests. They are important however, because
they allow early detection of
discrepancies which can later lead to
increased exhaust emissions. It is
generally less expensive to have such items
adjusted immediately rather than allowing
them to contribute to costly repairs. The
maintenance intervals have been
determined so that the vehicle, under
normal conditions, should operate
properly between services.

Changing the engine oil and filter

Change the engine oil and oil filter every
10,000 miles or 1 year. If oil consumption
should increase, determine the cause and
take necessary corrective steps. Do not
reset the Maintenance System service
indicator if the oil level is adjusted or
changed outside the interval of
10,000 miles or 1 year.

Replacing the air filter

Under normal dust conditions, replace the
air filter at every 20,000 miles or 2 years.
Clean air filter cover and housing prior to
removal of air filter.

Replacing spark plugs

Spark plugs are subject to electrode
erosion and must be replaced according to
G
WARNING
the specified maintenance intervals, or
more frequently as may be required when
subject to severe operating conditions.
Maintenance service descriptions
Vehicle Maintenance Service Work
(including Emission System
Maintenance)
i
Maintenance services should be
performed at the number of miles or
years (whichever comes first) as
indicated.
Detailed descriptions for each
maintenance service can be found
starting on (
For description of emission system
maintenance jobs, see (
Please make sure you read the technical documentation, such
as the Operator's Manual and workshop information, before
carrying out any maintenance work.
page 9).
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page 8).
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