Does anyone know how to change a HID Xenon bulb? less than 10K on the clock and I have warnning that LH bulb is inop. Mercedes say if it's the electronics the warranty covers it (stores quoted £140 for a bulb!!!!!!!!!). I did expect it to last a bit longer than 9months.Iam aware that there is access thro the wheelarch but you need a uv joint in your wrist to do anything and to cap it all my car has runflats therefore mercedes think I don't need a jack or wheel brace. It would help access if the wheel was off the car. Any ideas before is give my wallet to the dealer.