Hello,
The illumination is handled by the BCM which sounds like is having an issue. I would disconnect the battery and remove the BCM to look for corrosion or water damage at any of the pins on the electrical connectors.
Here is the wiring diagrams so you can see how the BCM ties in and the location of the BCM as well.
Check out the diagrams (below). Please let us know what you find.
Cheers, Ken
Images (Click to make bigger)
SPONSORED LINKS
Friday, August 10th, 2018 AT 12:08 PM