I'm sorry if someone gave you a suggestion that wasn't useful, but a forum is just a group of owners that attempt to help each other. Sometimes you get valuable info and other times not so valuable. No matter, it's just folks being nice and trying to help you.
I went back and looked at your question on the "chassis controller". That model Adventurer has an engine/transmission combination that's been discontinued a while ago. So not everyone will know about your problem or even what the "chassis controller" you were told needs reset even is.
I did some searching and while it's not an answer to your question - it is a place that might be able to understand your problem and help you with an answer. It's a well-known RV Repairs and Modifications company and they have a Workhouse technical problem advice website. I think you can phone them as well.
Here's a link to the website: https://www.brazelsrv.com/Brazel's%2...s%20Diagnostic
Again, we're not Winnebago, but a bunch of owners just like you trying our best to help a fellow owner out. So, don't shoot me if I'm wrong with my suggestion.