The cabin air filter of the Fiesta is located in the center of the dash near the floor. You access it on the passenger side.

Begin by removing the rivet on the lower portion of the center console panel cover on the passenger side. You will need a phillips head screw driver to loosen the center portion of the rivet. Once the center bolt is loose, carefully pry out the outer ring of the rivet.

Remove the panel by gently pulling it out towards you. Start from the bottom side. There are clips that hold the panel in place. Having a plastic pry tool for interiors will help detach the clips. If you do not have an interior pry bar, you can use a large flathead screwdriver for leverage - have a clean rag handy to help protect your interior parts.

Disconnect the sensor that spans across the cabin filter access panel. Squeeze the tab of the sensor and pull to remove.

There are 5 torx bolts that hold the cabin filter access panel in place. 3 are at the bottom, and 2 are located at the top. Remove all 5 torx bolts. The upper right bolt (nearest the firewall) may require a socket wrench to access. The upper left bolt may require a torx screwdriver to access.

With all 5 torx bolts removed, you can now pull the cabin filter access cover off.

With the access cover removed, you can now pull out the old cabin filter.

The new filter will have air flow arrows on it. The arrows should be facing towards the REAR of the vehicle.

To reinsert the cabin air filter, you will have to twist and bend the filter to get it into the housing due to the limited space. Go slow so you dont damage or destroy the filter and it should pop back to its original form once it is lined up and fully slid into the housing.

Align the tabs and replace the access panel cover to the filter with the 5 torx bolts. Starting them by hand will help ensure they go in straight and not cross thread.

Reconnect the sensor by plugging it back in. It will snap into place.

Align the center console panel cover with its respective tabs and push it back into place. Again, you may need to have the assistance of an interior pry bar.

Reinsert the plastic rivet by pushing in the outer ring first, then the center section.

Check that everything is secure and enjoy fresh air on your next outing!