Since i've owned the car the dial in the middle has done nothing. I reckon it should make the headlamp beam go up or down, or am I wrong. There does not appear to be any wiring to fusebox postion 7 where the adjuster should be wired into. I've seen on youtube that some mk5 gti's still have manual adjust.
It certainly should, it's quite minimal adjustment though. You definitely can't see any movement? Cars with halogen headlights have that manual adjustment, do you still have the factory halogen headlights?