Hi Guys, I have a 55 PLATE facelift model 2.0 tdi 3dr, its got the factory fit xenons with DRL's. They have a fault where the main lights cut out, one side or the other then registers a fault on the dash - I simply switch lights off and on and they come back on but flicker before one side goes out. It happens randomly? Not impressed with the quality of these lamps, BMW's version have always been fine. Would it be bulb replacement or ballast? How much am I looking at?