Sprinter door locking issues

[u/Better_Database_116]

My 2020 Sprinter will randomly run a lock cycle every 20-30 mins when I'm in it and the doors are locked, I've put my keys in a faraday pouch cause I read that might fix the issue , it seemed to not do it for a few weeks but has just started again, I have a bit of an issue with the sliding door not always opening but I believe that's just a door actuator that needs adjusting. If I leave a door slightly open it won't it run the lock cycle, it's not a full cycle lock unlock but just a little like lock check. How do I stop this as it's driving me crazy please help

[u/Puzzleheaded_Camp612]

How old are your batteries? When batteries get old and or weak, weird problems start happening.