When I first was called on lift. It just wouldn't steer. it would go forward n reverse. And platform would raise and lower. I got it to steer and moved it back into my shop. It quit once in shop then started operating again.now it will not move forward or reverse and will not steer. Plat form still works. As soon as you step on deadman switch lift beeps and codes out. I have no books or manuals on this lift. I believe that it flashes a code on battery charge level indicator. If this is true it flashes 3 times pauses then flashes 5 times then pauses and flashes quickly(which I imagine is the end of code sequence) serial # on lift is OPX3035005001 model is OPX30.