I am having a problem with both sliders (one auto, one manual) on my 04 Sienna LE freezing up on cold days after we've had some precipitation (cold rain, freezing rain, sleet, snow). I've taken it to the dealer once so far, and they diagnosed it as rusty hinges and they greased them. I'm skeptical that this is the problem since it only seems to happen after we get some precip. Is anyone else having this problem, if so have you gotten it resolved (and how)? Thanks. FYI, I live in Albany, NY so it’s not like I live an extreme winter environment and the problem just surfaced this winter.