Memory seats losing memory

[Mikey999]

This just started happening while resting in the vehicle waiting for a ferry to drive onto.  We were moving seats up and down as we got in and out vehicle several times while awaiting for a ferry at a ferry terminal on the east coast.  Suddenly i goto start the vehicle and goes to a lying down seat position and i had to move it back up and same with easy exit. I never touch set buttons So i repogram my seats and memory holds for a bit. We board a ferry come off my memory gone again. So i reprogram and fine for a while. Then while resting in the vehicle on another day at a lighthouse sightseeing my wife starts vehicle with her fob and her programmed seat position is gone as well and changed to a lying  down positions . Im able to reprogram but it does not seem to last. What could it be?  Is a module going bad might it have anything do with being near saltwater dampness?

Edited August 7, 2022 by Mikey999
Typos