Right guys brought my leon 6 months ago, had a re-ocurring problem with the engine management light coming on. the garage who sold me the car sent it to a garage that wasnt main dealers, 6 visits later changed 2 sets of glow plugs and the engine management light still came on. So this morning took it to main dealers for a full code read and wella it was a stupid £2 battery fuse. Hopefully thats that sorted.