I have a 1999 406 2 litre petrol auto exec model. Apart from an intermittent Speedo fault, still unresolved, the air bag sensor is now playing up. On occasions the airbag indicator on the dash will stay on all the time, or stay on then go off or flash about once a second. It looks like a sticky relay but that is just a guess. Has anyone experienced this or have any useful suggestions please. Robin