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Replacing the Cabin Air Filter

Model: Smart Smart 451 - Years 2007-2015
Part: Cabin air filter

The cabin air filter is located just behind the central air duct. The first step is to locate the cap of the filter container positioned to the side, near the accelerator pedal. Release the retaining clips and remove the cap. Pull out the old filter, clean the container of any debris present (using low-pressure compressed air or a vacuum cleaner), and insert the new filter, ensuring the airflow direction is correct.
Finally, reposition the cap by first inserting the central tab into its designated slot and then securing the retaining clips.

Updated on 3 February 2026 by ScegliAuto

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