I'm posting this in the hope that someone has had a similar problem and can advise. I was driving in the dark and every time I went onto main beam , in addition to the normal blue warning light for main beam, the ABS and red warning lights next to it flashed momentarily. This happened every time I went onto main beam. Everything else worked normally. When I arrived I switched it off . When I went to start it again shortly afterwards it was completely dead, No lights - nothing, as if the battery had been disconnected. After about a minute I tried again and it was completely normal , everything working again but it had lost the radio code . All visible connections including the main 100amp fuse are clean & tight. The battery is fine and the alternator is charging within limits. As far as I can see from the wiring diagram no single ECU or module controls everything so I am at a loss. Anybody had a similar problem and if so what was the cause? I've had this car for 5 years & it has never missed a beat. Many thanks. Steve