Air Cabin Filter
Not sure what year yours is. Mine is a 2009 and I found out it doesn't have a replaceable filter.
In order to check yours, drop the bottom glove box, push in the tabs on the sides to drop it all the way down. Mine showed a black honeycomb housing, and doesn't have a filter to replace. If yours does, there should be 2 tabs one on each side of the housing. Depress these and slide out the filter.
Replace the new one with the arrow pointing to the floor and slide it in.
Reverse everything to button it up.
hope this helps