I forgot to mention that one time I had the same problem you describe, I could not lock the deadbolt, the electric would continually force it to the unlocked position. A new keypad fixed that issue, it apparently shorted out in the "unlock" position. But weeks later it went the other way, when I would try to close the door as soon as the pins made contact the deadbolt would jump out and you could not close the door! That time it shorted in the "lock" position. Lastly it just plain would not lock or unlock the deadbolt. I went through 5 keypads that I knew of.
It seems the weak link is the Dexter keypad itself, not the Bauer lock according to my local dealer.
2014 Seneca 37TS
Toads: 2014 Ford Explorer Sport or 2013 Ford Focus ST