Steps are powered by the chassis battery. There is a circuit breaker (white button type) in the right seat breaker area, that controls this. The magnetic switch on the door is many times at fault, wires broken, loose, etc on it, Check the position of the step control rocker switch also as it either allows the steps to go up and down every time you open/close the door, or leaves the steps down till the engine is started. If you are used to it being in one position and it got moved to the other, you may be experiencing something you are not used to.
The View/Navion forums on Yahoo Groups are a good source of info for problems such as this.
2007 Winnebago View 523H on a 2006 Dodge (Daimler-Chrysler aka Mercedes) Sprinter 3500 chassis (T1N). Bought Sept 2015 with 18K miles on it, Prog Ind HW30C, Prog Dymanics PD4645, Coleman Chill Grille, PML/Yourcovers.com deep alum trans pan, AutoMeter 8558 trans temp gauge, Roadmaster sway bar, Koni Red shocks (front & rear), Fantastic Ultra Breeze hood, added OEM parabolic mirrors and RH aspherical mirror, MB grill conversion.