I agree with the first reply...you probably need some good lube and you'll be good to go. I can connect with this issue, as the power locks on my 87 rolla seem to freeze up pretty good when it gets cold. Sometimes I have to press the button or unlock it with the key several times for the locks to come all the way undone. Likely it's just the lubricants gelling up in the cold. And as for the second reply, his locks probably remained unlubed or poorly lubed for so long it put too much stress on the mechanism and caused it to fail. Have a look around and see to lubing them up good, and let us know how it turns out!