Same story here, not sure exactly what the problem is, but sometimes one of the fogs likes to stay dark for a while.

One of my angel eyes goes half dark too. Replacement is in the mail, but needing to rip into the headlight is making me very content with it as is.

Perhaps next summer I'll take the front end off and get the lighting perfect.

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2002 X5 4.6is - Titanium Silver / Black Alcantara - Dinan Stage 2 - Bilstein/Eibach - Brembo BBK ----SOLD---
1993 318i - Brilliantrot / Tan - bone stock daily driver