Bala all you got to do is open the glove box,have a brief look with a torch /light & you can see a small rectangle lid kind of thing. You just need to press on the sides of it & it will come out. This is the cover for the filter. Now you can see the filter for yourself & all you need to do is just pull it out. It wont even take 2 mins once you find out how to remove the filter closing lid. Dont wait for next time. Have a look & see if they have actually cleaned /replaced it. PM me if you need any assistance.