I was thinking of trying to retrofit it to my car. Then, as I was moving my car today, to my surprise, the mirror tilted down automatically. I know when you set the side mirror switch to the driver's side, that activates it, but I coulda sworn when I first got the car, I played around with it and didn't see it happen. I have Sport Package, but that's about it on my 03 325Ci. Is it supposed to be standard? I don't recall it being on my window sticker.