Nissan Repair: 2000 Nissan locking system, switch remotes, body control module

Question
all of a sudden, the doors have started unlocking by themselves. I lock the car and it almost immediately unlocks. Also, when using the clicker, the lock and unlock beep does not sound and the lights do not flash. No matter what method of locking the cars is used, it still unlocks on its own. It also locked by itself one day when the keys were in it.

Answer
Carol,

The body control module is going nuts and needs to be looked at and most likely replaced.  That is, unless the keyfob you are using is not shorting out.  I would try the keyfob that is a backup and remove the battery from the primary one.  Then, if that does not do the trick switch remotes and remove the others battery and try again.  If both of these fail then it is the body control module.