2023 TRD Off-Road. Collision Light Turns On In High Heat and Sun

When the outside temperature reaches 101F and above, and during certain sun angle conditions, the collision avoidance unavailable warning light turns on.

If the temperature cools down, or the sun angle changes, it'll turn off.

The image looks kind of like this, but there are arrows in place of a star.

Is this normal? Do I need to clean the Toyota grille badge? Or do I need to get it looked at.

 

Cleaning it won't hurt.
Mine will go off sometime when its foggy in the morning and a few times when its nice out 70-75. No idea why.
If your under warranty you can take it in,but most likely they won't be able to recreate the issue.

 

I too live in Phoenix and have had similar issues, but I never attributed it to heat or light since the device works on radio waves.

Mine have all been caused by dust and bugs. I carry "Dude Wipes" in the truck as an all purpose cleaner that is body safe if I need it. One wipe across the Toyota Badge and the collision warning and adaptive cruise control comes right back on line after I reboot the truck.