Thought it was the battery as it was from 2019 and raised the hood and found the below. Costly repair dealership?
Clean out all the crap in the engine bay, then do a visual inspection for damage. Edit, The inverter coolant reservoir should be an easy replacement. The important thing is to check all the wiring for damage.
Squirrels... Rats would of tried to get inside through the dash vents... As I'm sure you're quite aware... Leaving almost anything with nooks and crannies unattended for a long time means it turns into habitat for whatever ecosystem still exists in the area.
Yeah popping the hood often helps. I'm glad I got the cover for this zone: Why the heck Toyota left it exposed is beyond me. The part no for the cover:
Pretty sure that's normally covered... Suspect when car died and was unwittingly donated to homeless rodents whoever was doing the diagnosis didn't put the cover back on. And clearly the orange plastic is tastier than the black plastic and black foam insulation. As in, plastic chewing species have never had it better on our planet!