Hi, I fitted OEM Bi xenons, ran them for a while, then added the headlight washing system, and then eventually the Auto levelling System (Which allows the shutter in the lights to open fully, and let the full brightness of the bulb out) From what i understand with UK MOT, You can have xenons with no washers or levelling, But if either systems are fitted they have to be fully working to pass an MOT.
I would advise a Vag-Com scan there are options for the types of lights fitted ie- Halogen, Bi xenons without shutters enabled and Bi xenons with shutters.
Have Fun