Scott, Your first post was correct about the card. I purchased a used card (actually the complete control unit) and that fixed the issue with the handset. The handset comes on now with the replaced unit. Now I need to program the card. It is the same model number but I am certain the settings will not be correct for my forklift. I am having trouble finding the programming settings for my forklift erc040acn36. Does anyone know where I can access the settings for a specific model? Thanks, Brad