S80 Cabin Filter Change
From Bay 13
The S80 has a cabin filter that is scheduled to be changed every 15,000 miles and my experience shows that the 15K interval is about right. The part number for the filter is 9204526, and can be purchased at any Volvo Dealer. The tools you will need are: inch small ratchet, 25mm torx bit, a large flat head screw driver, and about 15 minutes of time. To start with move the passenger seat all the way back, and take out any mats you have on the passenger floor. The mat only takes up about inch but later you'll see that every little bit of space is helpful when trying to get to the two back screws on the filter box.
With the seat back turn the plastic screw from it's horizontal position to vertical.
With the screw vertical, gently pull out and at the same time pull at the vent in the front of the trim, towards the rear of the car.
Now take out the two 25mm torx screws holding the lower kick panel. Gently pry down and back and the kick panel will come out.