Is there a module or something that controls power door locks and the signal from the key fobs? Door locks acting very strange, locking and unlocking all by its self just sitting in the garage.
Yes it will do it with or without the key in it.
Mine was going crazy locking and unlocking and this was the solution (after replacing the battery twice to no avail). Once I fully opened the fob up the small contact discs for the buttons were all over. I put'em back in place with a dab of glue and haven't had a problem since.I even had to re-glue the bits of metal that make contact to the circuit board.