Yes, i did. It was one of the rear ABS sensors that was to close to the ABS ring built into the wheel bearing. The ring was rusty and scraped against the sensor. I need to change the bearing in the future but for now, a washer between the sensor and the wheel hub separating the two a few mm and cleaning the ring did the trick.
I think VCDS found the fault as "Left rear abs sensor fault" or something like that.
I dont know what the ligthts have to do with ABS but nothing surprises me anymore with this car...