In addition to my fuel filler problem below I also have an issue with my xenons which now only point straight down when turned on. Car was at the dealer for a service last week and they replaced the sensor which governs the self levelling mechanism which they said was faulty. Unfortunately this has not resolved the problem, much to my annoyance as it would appear that no one tested the lights to see whether they worked properly after the repair. As this will almost certainly not be covered by the extended warranty I am starting to get concerned as the car is headed back for another dealer visit next week. Any help much appreciated.