Once it got cold (below ~32) the door would sometimes not latch shut after I open it. Now it's been totally frozen shut for at least a week. I have to park in an open parking lot (college dorm) and there's very little sun now (average temps these week are below 10 degrees). I'll see what I can do over break when I'll be at home. Come to think of it, the first thing to happen was the lock freezing locked. Now it's frozen unlocked. But I've gotten my car hot on the inside for anywhere from a half hour to an hour, and it hasn't budged.