They're actually not that tricky to strip down completely
The control units changed from separate parts mounted in the inner wings to combined units from 2001 - early ones the left one comes out via the wheel arch liner, the right you have to take the headlight out and it's bolted to a panel underneath
From 2001 the units are screwed to the sides of the headlights.
Does it throw a fault code with the light not coming on? If it's J343 or J434 then it's the control unit. If it throws N195 it's the starter unit buried inside the headlight
pdfs attached 
Adrian
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD===
2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus
2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
|