As most who have searched on here knows, a lot of the rattle problems we TSX owners have are from the right passenger window. I've been dealing with it too and I realize that the quickest fix to that is to open the window slightly (doesn't have to actually be opened, just a quick tap on the button will do). But just remember to "close" it or else rain might get in through the sliver....

You can test this out the best when your car is stopped by playing music with high enough bass to induce the rattles, and then opening the right passenger window just a little.

Of course this only works for rattles coming from that window....