I think people were having problems when they fitted the OEM parts from a golf which was causing some rubbing and ultimately corrosion. These look after market and a different set up - be interested to see peoples feedback.
Not so much what i did to my car but my phone - google maps and other apps enabled with a jailbreak tweak on ios11
Car wise all i've done lately is plastidipped the mesh grilles on the front bumper.
I think 8PO 941 004 E is a bi xenon without AFS (adaptive lights that turn when you steer)
I had the very same problem on my own S3 with the drivers side headlight - Lights would never stay on full beams ( nothing to do with reflections from road sgins though - just a dodgy motor)