I have the squeak too, coming from the center console left fin, and it is getting worse . I picked up my license plates yesterday and mentioned it to the dealer and he said that if enough people complain about something Toyota usually comes up with fix. I didn't make an appointment, I just mentioned it. I sure don't want to take the car in for a whole day but the squeak is pretty annoying.

Jasper Pearl, is your fix still working? And fullofbeans, do let us know what your dealer does to fix it. I keep giving the fin a gentle whack to make it stop, which it does for a few minute. The "cold" doesn't seem to have anything to do with the squeak for me...