Power locks

we have 1991 Acura Legend with 71k miles. The locking mechanism locks ands unlocks by itself.The battery also goes dead after a week or so of just sitting. I assume the battery drain is involved with the locks operating. Any suggestions on how to stop the locking?

Honda has had a problem with the power door lock module in the drivers side door. In our Honda, when this failed, it did not unlock, it just locked, over and over. Each time the solenoids activated, the lock would appear to pop up a little but they were not actually unlocking. It did it if you locked the doors while riding down the road and it would do it all night when parked. It never did it when the car was unlocked, only when locked. If this is what yours is doing, then it is the module and its about $200 at the dealer to get replaced.