Hello,
It sounds like the BCM is out. here is the location and how you replace it in the diagrams below. Also I have included the wiring diagrams for the lighting system as well so you can see how the system works.
Body Control Module - DB4G67560B - $152.84
Please check the fuses before you begin.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
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Wednesday, November 27th, 2019 AT 3:14 PM