So far, no responses, so did an engine removal and reinstall. This time the unit was correctly identified; otherwise same as before. It seems to be stuck in conventional mode. The two "bell buttons" on the remote do operate the appropriate sounds. Forward and reverse work, but that's about it. The interior lighting is strange. Light bulb at each end works, but the middle of the trolley is not getting any light. It appears there is something inside blocking the windows. It looks weird to say the least. Does anyone here have this model trolley? I have no idea what the lighting is supposed to look like.