Thanks! I mentioned this to the dealership to help explain the situation. Unfortunately for me the 4Runners don't have manual mode. They said to open up a case with Toyota so that Toyota can share software information with them that they apparently don't otherwise have access to. So that is...
I have and it lasts longer but eventually still get hot. Since the 2025 4Runner doesn't have manual option this seems to work best right now besides putting it in 4L (which is stupid and unnecessary)
Just got a new 2025 OR Hybrid 4Runner (~2,000 miles), drove it from Colorado back to California mostly off-road and am having the exact same issues, with no extra load. Happens in 2 and 4H. Tow mode helps. On roading is fine. I am bringing it to the dealer tomorrow to see what they say.