Automatic transmission may overheat on Toyota 4Runner

In some vehicles, the automatic transmissions over heat light may come with sustained highway driving or driving at a sustained speed. Our technicians tell us that flushing the transmission and changing from Dextron lll to Dextron ll can help remedy this problem.
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Average mileage: 185,875 (108,500–275,000)
Drive Trains affected: 2WD, 4WD, Automatic Transmission
6 model years affected: 1990, 1992, 1993, 1995, more1996, 1997
9 people reported this problem
3 people shared problem details
1992 Toyota 4Runner- Automatic Transmission275,000
A/T oil temp light comes on at sustained speeds and steep long inclines. It smells like burnt tranny fluid but when checked it's fine. I've had my runner for 11 yrs. and has only been doing this,in the last 35,000 miles. It makes me crazy trying to figure out how to fix it. Got it at 147,000 miles. But she still has alot of life in her. Gonna try the switching from Dex||| to Dex|| and see if it fixes anything.
1993 Toyota 4Runner- 4WD108,500
1993 4runner 108560 miles, on Phoneix to LA run, overheats on grades 105 degree heat with AC on. When the trans hot idiot light comes on, I turn off the AC, slow to to 50-60 (whatever the truck holds easily in high or no overdrive, and the light goes off in about 15 minutes. Poor thing has no power to hold grades without working its little butt off, which the coolant temp and oil temp have no issue with, but the trans sure does.
1995 Toyota 4Runner- 2WD228,000
automatic transmission overheating.going to try switching to dextron II
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