Hey Liam sorry for the delayed response mate. It's an issue with the o/s dipped beam. First it was intermittent, if say i went to the garage and switched engine off, filled up, start the car again and suddenly the 'bulb out' symbol flashed up - with drivers beam not working.
Now it just seems to have stopped coming on at all. Had it to the auto eleccy and he recons the bulb's fine, circuits fine, so it must be the igniter in the ballast. Apparently it's a sealed headlight unit and although possible to get into it, would be far simpler to get a complete new unit... the small matter of 500 spondoolies from Audi. So like i say, i'm on the hunt!
Have you heard of this trouble before, or d'ya know of the part no.???