MAINJAFAD, you are right. But that was very much because some folk in the early days, understandably, took modern BITE to be exactly what it said it was and believed that the fault codes would do all the diagnostics for them. To a considerable degree they do. Then came people with far greater depth of system knowledge who realised there was more to it and the promise of a BMW-like service and repair system didn't quite do all it claimed. Sadly, working practices had already become chiseled into tables of stone and there was no hope of a Velvet Revolution.