Door locking and inside lights

This happened to me once before. i woke up this morning to find my doors were frozen shut. I used the remote to unlock the doors but couldn't open them. I pulled the handles of all the doors but wouldn't open. I hit some warm water and splashed some on each door. I got in and went to work. Since then my door locks lock and unlock randomly. As I'm driving they randomly lock and unlock repeatively. The inside light also turns on and off. It's like it's possessed. Any clues? Thanks