This a complete WAG but is that switch module an inertia (roll over) fuel pump shut off? I am not sure if you can on/off operate the button and disable or enable the fuel pump? You could try starting the engine (if safe to do so with all your under dash work going on) after cycling the button to see if it quits. I think Ford went to a different system in 2017 ? based on restrain system detection and may no longer require a hard button reset after a collision....just cycling the ignition switch.....but I am not certain.
I don't know your coach, but regarding the slides, there should be a 30 amp fuse in your converter fuse panel that powers the slide controller(s)/motor(s). Maybe that fuse has blown (if it's the same in your coach as mine)?
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