Multiple electrical faults artsy the same time

[Flyin Transport]

2019 ram 1500 Laramie with 210604 miles

Last summer I changed out my sear covers. I had problem getting the passanger side off.. After I got them changed and turned the P/U on, I got multiple faults. (There were no faults before).. Service Airbag System.. Service Trailer Brake System..
I wasn't worried about it.. until this week and it snowed and the 4x4 System is off line too..
The thing i have done

Take the negative post off last night and put it back on this morning.. didn't help

I pulled the passanger seat out to see if any wore was loose.. everything looks fine and nothing out of place.

I have so checked the negative connection to the body.. next to the Battery

I can't figure out whee the fuse for those systems are.. I have been all over the web.. and nothing is helping.

 

[70runner]

Put the battery on a trickle charger at least overnight. Marginal battery condition is often a prime suspect.

 

[kapinallinen2]

What, if any, codes are stored?