My experience (if the batteries are good) is the whole mechanism under the steps needs lubricating, particlarly if you are in a humid climate. I Go after mine with a spray lubrcant to all the moving joints at least twice a year. You will also want to make sure the mounting bolts holding the assembly are all tight. I have found them to come loose at times which results in the steps not retracting properly.
Dennis & Carol
2003, 4006, 41' DutchStar,
Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.