You can also try to unplug the 4 wire connector and spray contact cleaner in it and reconnect. The connector is susceptible to the weather and could have some corrosion. It worked for me once.
Remember, your steps could activate as soon as you touch it, so stay to the side and behind, out of the way, just in case they extend.
While you are down there lube the hinge points that are under your steps. Your steps could just need a good lube.
06 Hurricane 34FT WH W20 Chassis 8.1L 129K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, KVH R5 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee