People on my American Coach site tell me the control box for this is under the stairs and by recycling the connectors there a few times, it usually fixes the problem. It is a metal box with lots of wires in and out, and connectors, about the size of two or three cigarette packs. Hope this helps.
It seems to be a not so unusual problem. Maybe you can google smart wheel problems....
Fleetwood Revolution LE 38X
2011 Scion TC toad