HVAC blower won't shut off, control panel unresponsive

I've got a 2019 Tundra TRD. In short, the blower motor wont shut off even with the truck off and key out of the ignition. I have to unplug the blower motor to shut it off under the passenger dash. The control panel lights up, but none of the three knobs do anything. I can't change the temp, blower designation, or blower strength. It's stuck on whatever the setting was the last time it worked. It doesn't matter if the truck is on or off when changing the dials, nothing changes. However, when I adjust the blower strength knob (furthest left knob), the AC light above will illuminate. I can push the AC, recirculate, and defrost buttons, and they illuminate, but don't change anything. I thought maybe I had a bad computer assembly (part number 89100-0C030), so I replaced it. Nothing changed. Any ideas or help greatly appreciated.

 

Any mods to the truck at all? New had unit? Wired anything up?

 

No mods or anything. I did get water in the cab, which started the problem. Probably should have mentioned that.

 

I was hoping that someone else would have added something useful to this by now. Where specifically did you get water in the cab? Was it from flooding? A leak (specific area)? Etc

 

The truck was flooded. I live in the middle of Alaska on the Kuskokwim river. It over flowed and the truck went underwater up to the steering column.