found this online for an 06 3 might help us...
Location of Cabin Air Filter: Behind the glovebox, which is easily
removable. After opening the glovebox, push the top sides in towards
the center. It should lower about an inch or two. Pull the bottom left
or right hinge towards the seat with a quick jerking action. Then pull
the opposite side. The cabin filter slot is about 8 X 1.5 inches rectangular. The tabs to open are on the bottom side. To remove the filter, which you want to make sure of the air flow first, you will have to
press the filter in on the right side because of the brackets around it.
