My brother in law has a mk1 tdi. He lives a fair distance away so been trying to diagnose his problem over the phone. Car was working fine up til one day last week when it wouldn't start. Wouldn't even attempt to turn over. He told me he had dropped his key and it had come apart. My response was that he'd probably lost the chip from the key and therefore the car was immobilised. Sure enough the chip was missing. However, he has since found the chip.and refitted to the key. But the car still will not attempt to turn over. So, anyone know what might be wrong? Thanks