Today which arrived in the post were 2 LED bulbs (3 LEDS on each bulb). The ones which came with the car were a yellowish shade, so I thought i'd attempt the BMW look! Anyways.. I came to fit them and the screw was a real pain to get out - Ended up rounding the screw (Just enough to tighten) when installing the LED's. I purchased the bulbs as they were meant to be error free (Canbus I think it's called). Anyways, after fitting them and working I started up the car and I get an error message about my number plate lights being out! So, I ring the seller up and he informed me that from 2009 onwards Audi have created a pulse voltage through the electronics of the car and the canbus can't tell the car or something that a bulbs there? Has anyone else experienced this? Would this affect my Audi Warrenty? Love the look of it, as it makes the car look so much better in the dark - But the error icon is very annoying!