FWIW-Our Kwikee acted mysteriously for some time. It would work (or not) intermittently and the switch would (or not) work. We thoroughly went over it, including removing the motor. One frustrating day we had to pull the pin on the cam arm and bungee the steps into the stored position. Soon after parking, we re installed the cam and pin and everything worked fine-for a day or two. Then; upon retraction, the stairs failed to retract and hung limp. We discovered the inside of the cam that attaches to the ball on the motor had wallowed out and had eventually come loose. Fortunately, they have a kit for that as replacing the whole motor would have been quite a hit. Weeks later and we have yet to have a step malfunction. I can't explain it; but there it is.