Hi, I have a 1999 520i which has been perfect up until a month or so ago. I had a problem starting it, it wasnt the usual battery problem as everything worked fined but no start, no turn over, no click even. When i started to read about this problem i heard it was possible that the key lost sync with the ews and so thought the key was wrong and wouldn't start. I have had this problem a few times now and when i turn off the key, wait a few seconds and try agian, after maybe 10 attempts it sometimes works ( one time not until i got out, locked it, unlocked it again and then tried it). Is there anyone who can give me some thing i can try to identify for sure where the problem lies, I know if i take it into bmw here in sweden its going to cost the earth just for a diagnostics check. Is there a diagnostics tool i can buy that i can use myself which reads these electronics fault codes maybe? Very frustrating to be stuck in the middle of nowhere with small kids in the car.
Any ideas very welcome.