Yes the only reason to take the end cap off is to release that tab. Also note there are two hidden clips at the top of the glove box (one one each end) That will require a little tug to pull the whole unit out after removing the 5 hex head screws. The only problem I had was I couldn't figure out how to release the socket for the two wires. I was able to wrestle the filter in anyhow. Maybe someone can post how to disconnect it. Another thing I always do is put a light coat of grease on the clips to make the next time easier.Thank FiftysLost, I'll check that when I get a chance. So what's the point of pulling off that end cover? Just to unclick the tab? The directions do say to "remove the screw affixed to the side of the glove box", is that an error? That torx screw was the only one I noticed in there.
*** EDIT. I think you're right about the torx screw. It seems pretty much impossible to reach from the angle I show in the pics. I guess next step is undoing the screws with metric heads and undoing that plastic clip and seeing how that works out. Car is gone at the moment so maybe I can give it a shot this weekend some time.