I want to bump this because I started having the exact same issue today. I'm going to replace the bulb, then fuse and hope it's fixed. If I still have issues, I hope someone has some insight on what could be causing the problem.
It's actually the foglight that comes on when car is off & you open the door (at least sure looks that way). Be certain you check for the correct bulb. Foglight is when you pull out (not turn) the lightswitch one notch.
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