Sport button problem...
Due to the location of the sport button, it is subject to liquids spilling into it. Has this happened? You can easily remove it and carefully disassemble it for cleaning. I would suggest rubbing alcohol and Q-tips.
You may also purchase a new switch from your Toyota dealership.
This may be all that’s wrong.
I had a similar issues with my Highlander rear climate controls. The kids had spilt so much stuff on it that we had no control. After removing and disassembling it, I discovered that the dried liquids had made permanent connections between some of the contacts. Used some rubbing alcohol and Q-tips to clean it up. Reinstalled, and everything works like new again.