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Replacing the Cabin Air Filter

Model: Smart Forfour W454, MK 1 - Years 2004-2006
Part: Cabin air filter

The cabin air filter is located on the passenger side, behind the glove compartment, above the scuff plate (where the electric power steering control unit is also located); remove the carpet trim to access the air duct, then take off the cap of the cabin air filter container and pull it out of its housing; ensure there are no dirt residues inside the filter housing and insert the new one (preferably activated carbon) following the airflow direction indicated by arrows on the filter itself, then reapply the cap and the carpet trim.

Updated on 17 February 2026 by ScegliAuto

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