It could be that there is no interior release? Check at the hood like we did years ago, before people were stealing vehicles, and they put those latches in.
This is just a guess....I don't have a Tiffin, nor have I ever been in one...just making a suggestion, and maybe someone with that model RV will write to you.
Good luck
Bill & Claudia / DD Jenn / DS Chris / GS MJDogs: Sophie, Abby, Brandy, Kahlie, Annie, Maggie, Tugger & Beau 🙂RIP: Cookie, Foxy & Gidget @ Rainbow Bridge.😞2000 Winnebago "Minnie" 31C, Ford V-10
Purchased April 2008:B FMCA# F407293
The Pets