My colleague has just spent £500 on trying to get an immobiliser problem fixed and it hasn't worked. Basically she parks up and the car won't turn over. She needs to leave the car for around 10 minutes and the car then turns over but this seems to be more luck than judgement. The only thing I can see is the front air bag light seems to come on when she turns the car over. Any help or advice on this would be appreciated.