Same here too, and I previously had an early Mk5 GT TDi, guess what? exactly the same problem with both the lights and wipers, they have a mind of there own, couldn't get the stealer to fix them then, so not even tried with the GTI, just gone back to old fashioned use of the switch and lever, never fails to work

Also got a 5 series BM and both the lights and wipers have worked in auto perfectly for the last 5 years, so it's simply VAG have not developed their system correctly, suggest they raid the Beamer parts bin.