Brake light malfunction

Hey everyone I am new here. I am driving a 2010 prius one. I am the second owner. I am having some issues I can't seem to find an answer to. Any help is much appreciAted.

If my headlights are turned off, my brake lights work fine, but dash panel turns on. If my headlights are turned on then all three brake lights turn on and remain on in absence of braking. This car has some other electrical computer type issues as well. For example, the radio displays random characters from time to time, when I hit a bump the a!arm goes off saying key in car, sometimes the stereo just doesn't work, also the air conditioning randomly does not work. The most pressing issue here is definitely the brake light problem. Thanks for taking the time to read, double thanks for help.

 

I imagine its possible, I also feel that it's likely the first owner did have this car in a flood. It started happening less than a week ago. Where would I locate the main wire harness to inspect it?

 

Thank you! Do you know anything about the Toyota code reader (not the obd2) and the software one has to download? I see Walmartsells a Toyota Prius code reader which gives more in depth information but I can't seem to find out if I need the software and if it costs.

 

Well, I was reading the scanner description wrong apparently it comes with the software. Some how I confused myself into thinking I had to purchase it from Toyota.

 

So a week ago It fixed itself after I knocked the brake paddle by accident. This morning on way to work it switched back to having the stuck brake lights. From what I've been able to see so far the wiring looks good. I think I'm going to see if the Prius code reader can shed any light before taking panels out to further investigate the wiring. What's strang is everytime it starts malfunctioning the traction control light comes on even though there's no OBD2 codes to be read, then that warning light will turn off when my brake lights work normal again!

 

I've ways had some strange computer related issues with my prius. It's hard to fully describe but my theory is my car was flooded before I got it. So my brake light issue was intermittent, the last time it worked fine then stopped working fine I opened up the panel above the brake pedal, followed the wires I could see, check the connections I could check and happened to fine tune my brake light switch as it was a bit off. This was several months ago and the problem hasn't come back up since. Honestly I can't say me checking the connections did, or did not, do anything.

 

Just another update for the sake of information, the issue hasn't come back up since. I took the kick panel out bellow the dash felt all connections re adjusted my brake switch so I didn't do anything special nor find any issue with it and a few days later it stoped and never did it again.