We have a Clark S-Series S25CL. The engine light is illuminated. There are no codes on the screen, and I can't access the service menu without a 5-digit password. A few years ago I was able to find common passwords for this model on a forum somewhere. One of the passwords listed worked (if i remember correctly it had three 5s and two oddball numbers). Naturally, I never wrote it down. I have searched online and can't find anything on the subject anymore. I have also called any and all forklift service companies in my area, as well as Clark itself. Nobody can give me any kind of answer. Hoping to find something here.