No power to any lights, dash, door locks, etc.?

It sounds like the BCM has gone out, but first let's check the fuse #41 50 amp in the fuse panel under the hood. here is a guide to help check for power and to see if the fuse is any good. Was the car driven in heavy rain? I have seen components get wet and cause issues.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Also, we can try to confirm the failure by doing a CAN scan, you can get a CAN scanner (Controller Area Network) from Amazon for about $32.00. here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let's check all of the fuses as well with the key or power systems on. If codes for the BCM come on you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please let us know what you find. We are interested to see what it is.

Hi Ken. I live in Southwest Florida, so we do get heavy rain on occasion. It rained heavily at the end of last week as I recall. Fuse 41 looks like it's still good and there is power on one side when I pulled it. I've also checked the other fuses and everything that seems like it should have power does.

Okay, did you check all fuses with the key/system on? I need more information on what doesn't work, windows, lights, etc.