fcooper wrote: "Although it lasted 15 years, I have decided that I need to lube those steps more often. The manual for the steps recommends Kwik Lube (aerosol grease), so I'll be looking for that soon. For now, everything got lubed with oil to stop the noise."
Yeah, lubing the steps often helps extend their life, no doubt about it. The gears inside the transmission assembly are made from some of the cheapest pot metal available and they do wear out. Mine literally exploded and I had to replace the entire drive assembly since individual internal parts were no longer available. If you hear grinding when the steps actuate, that's not good. Getting lube inside the drive assembly is more difficult than lubing the pivot points. If you can't easily find the official (overpriced) Kwikee lube, a product like Tri-Flow works well. It's for bicycle chains. It has P.E.T.E. in it. It's available at most quality bicycle stores. If you do end up eventually replacing the whole drive motor/transmission assembly there is also an upgrade control box kit that comes with it. I replaced everything but the steps and I'm glad I did. Working fine three years later.
Chum lee