Have a '21 XLE Hybrid and wife just mentioned that the center display just randomly turns off. We were driving today and it happened out of no where. Do live in Texas so not sure if the heat is causing anything but maybe one of you know where I can check wires or fuses before taking to the shop.. This worked for me on my 2020 Toyota Highlander. Just bought the car and battery started smoking/steaming so we replaced it and then the screen started going off and on like every other minute.
A weak or dying battery can disrupt the power supply to the screen, causing it to malfunction. A non-working screen in your Toyota Highlander can be frustrating, but by following these troubleshooting steps, you can identify the problem and get your screen….. After a battery change, my 2021 Highlander XLE screen was turning off and turning back on, caught in a boot loop sequence and completely unresponsive. I googled and found this thread.