OK clever people i have a problem with my 2003 2.2hdi c5 Driving along the motorway the ESP fault displayed and the car died.No bang or juddering or any other warnings displayed.Car still turns over will not even try to fire up.Also windows have stopped working so has the interior lights, Windscreen wipers and headlights.Connect fault code reader and shows nothing at all.Central locking still works though(small pleasures and all)I've cheched the fuses that i could find and all seems as it should. Any ideas on what is the best course of action next would be great. Thank you Lee