Does your 4Runner have a transmission thermostat?

[IRFAN0922]

I am really confused by this thread. What does “transmission thermostat” mean?

I know that on the Jeep, the transmission cooling lines go to the A/C condenser. Half of that condenser (the radiator-type cooler) is used for the A/C, and the other half is used for transmission cooling.

For heavy towing, Jeep offers different fan options—one standard fan and a faster fan for the towing package.

I’m not sure about the SR5, but I believe it works similarly here. The radiator/A/C/turbo cooling system may be sharing the cooling capacity, with part of it being used for transmission fluid cooling.
I tracked the lines coming out of Transmission and going to front.

Sponsored

 

[IRFAN0922]

It would be amazing if I could get a few users to reply to this with their 6th gen 4runner model year and packages. And whether or not their truck has a transmission thermostat or not. This PDF outlines the 3 equipment types these 4runners can come with. My question is which models come with what parts?

My 2026 TRD ORP comes with the bottom option, "model with oil cooler assembly" and it doesn't have a thermostat.

if this PDF is correct , which is correct , after when I track the lines , so the engine Radiator sharing the cooler , and its not a good design , because it may get leak in few years because jeep has the same drama and its share with AC condenser .