Hi, i am using a sterling mobility scooter to make a kids toy. Sometimes when i switch it on everything is ok, other times it is dead. Nothing i do will persuade it to turn on after this. My question is whether there is a reset procedure and if the handles on the tiller are not central will it still turn on. I have checked all wires and connections, left it unplugged from the batteries, ensured the batteries are charged and reconnected everything as it should be. No joy . Also can i read trouble codes from the diagnostic plug and how would i go about it. Please help excited kids and no prospect of getting it to go. Sorry don’t know what model but it’s the big 4 wheel one with a digital dash from a while ago.