How do you know your steps are moving? On my coach, I swore this spring that mine were moving also. However, after some investigation, I found that the plastic that FR uses for the right hand wheel well is not rigid enough and "flaps" in the wind. The sound it makes is just like the one the steps make. I've now verified this because the steps on mine are frozen (thanks to negative temperatures in Iowa) and I still hear the sound.
2015 SOB 5th Wheel
2013 Chevrolet 3500 CC, DD SRW
1 Wife, 2 Kids under 5
Camping nights: 2015 - 19, 2014 - 39, 2013 - 48