I have an issue with my central locking/alarm (neither work). It's not the fob (had that checked). All the items relating to the BCU work ok. I'm leaning towards the central locking receiver. Cant get a definitive answer from the local auto electricians one of whom said it could be the BCU. I have contacted Turner diagnostics who seem to know what they are talking about. And before you ask I don't have a nanacom or hawkeye. Any advice?