No fuse, its a circuit breaker, two of them. Open the door in the floor between the cab seats, remove the thumb screws holding on a cover over the circuit breakers and its in that row of breakers, one for the control and one for the motor, of the steps.
Go to page 3 of this, https://www.winnebago.com/Files/File...ire_152714.pdf
I highly suggest you download the entire wiring diagram and drawing set https://www.winnebago.com/Files/File...0167476013.pdf
Along with the plumbing installation drawings, https://www.winnebago.com/Files/File...523h_plumb.pdf
and save them to a dedicated thumb drive to carry with you in the black pouch with the manuals.
I owned a 2007 View 523H from September of 2015 until April of 2019, I learned alot about it. If you are not a member, the View/Navion forum may be of some help. There are three separate forums, a basic discussion forum, a Tech forum, and a Mods forum, you will find links and info on the Tech and Mods forums on the homepage of the discussion forum. https://view-navion.groups.io/g/discussion
Don't forget about the switch just aft of the door that controls the function of the door, and also understand that the magnet at the bottom of the screen is part of this circuit.