Ahhhh, so it appears the LED is getting too hot and melting the tip of the "fiber optic" or "light piping" eyelash strip - thus why the light changes to a dim yellow burnt color.Hello all,
I just found a video showing how to repair the DRL. It’s not in English and I have only just watched it but it gives me a little hope!
As for repair, all I can think of is cutting off the burnt end, polishing it, and replacing it with a glass cylinder the diameter and length of the removed light pipe section, then fusing them together with a very clear epoxy?
They should've used glass tips from the factory if it's going to be in close contact with a hot LED.
I just got delivery of my new-to-me 2016 TDI Exec last week and it was disappointing to see it had this issue too.