Originally Posted by bettrave
Well, cold, yes.
About 14F (-10C).
But, if it was cold related, all my doors would be affected?
It started by the rear and then the driver.
I would guess it's moisture related. Perhaps the drivers side was windward when freezing rain or ice was coming down, the wind worked it into the doors and froze the mechanical part that works the lock from the electrical relay. Can you find a heated place to park for a bit to see if unfreezing it would fix it?