I have read all the previous posts on this topic and none addresses my problem.
My car is a late 2002 RHD tdi Sport Avant. I need to change the right (as you sit in the car) dipped headlight bulb. Removing the plastic trunking from the turbo to the air filter is straightforward as it just pops off. But then I can't flip open the hatch at the back of the lamp unit to get at the bulb without removing the air filter housing, so I need to remove the entire unit. There are two torx bolts securing it from above - these are easy to remove, but something is still holding it back on the left of the unit (as you look at it from the front of the car). Other posts elsewhere have mentioned a bolt under the horizontal adjustment screw, but I can't find that screw or the bolt. It's driving me nuts because this should be such a simple task! And meanwhile I keep getting flashed because I have a lamp out.