Locking and unlocking by itself, security light on dash

Yes this can happens when the drivers door latch micro switch gets wet or goes out the system gets confused and then goes off. Here is a wiring diagrams of the security system so you can see how it works. Also, remove the BCM to check for corrosion on the pins of the electrical connector. Here is the location.

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken