2019 2020 transmission cooler missing

Yeah, rub it in....thanks....

 

I've got a fat little travel trailer that's just under 4k lbs fully loaded. Towing it over mountain passes I see 230-235 degrees in the pan for extended periods. That's truck, trailer family and the truck bed full of beer and gear. The torque converter temp can get up to the 250-255 if I run for a few minutes with it unlocked. No issues, no wierd tranny shifts and no alarms/lights.

Here's the crazy part...I hit those same temps running unloaded up a forest service road. One of those low RPM, high-load situations going up a hill at 25mph running 1,200 rpm.

I don't have a problem if folks think they need a tranny cooler...to be honest, I'd feel better with one. And I do appreciate folks raising the issue and trying to dig up facts. But all of these discussions lack any direct knowledge of what the fluid can handle and what the Toyota engineers designed the system to withstand. Since I've seen high temps running unloaded and at lower speeds, I'm of the opinion that all the 2019+ trucks see this temp at some point. It will be a normal temp range, even for short periods.

I'm going to run my truck for 35-40k miles and do a flush. I'll pull some fluid then to send to Blackstone. If it comes back burned/shot, I'll install a cooler. Until then I see no reason to to bother doing anything else....just my 2 cents

 

I am working on getting solid facts, that is PRECISELY what i am doing. I have the exxonmobil rep in contact with me on a daily basis. They know why im asking, but its toyota's fluid, and its their proprietary information so exxonmobil can't just give it to me. Which is something they (toyota) are not willing to give out ( so far ). If the fluid is breaking down at 220 like most all ATF fluids then we/I have SOLID proof. As i have stated in the beginning. I will more than likely be putting a cooler on the truck. but this is something that needs to be addressed ahead of time. I want the approval from Toyota, on a Repair Order, stating i will NOT void my warranty by installing a cooler onto my truck with toyota factory parts.

 

Great post! Quite reasonable opinion.

 

Kuul. Speculation is just that. Please post once you get SOLID proof. General statements like, " If the fluid is breaking down at 220 like most all ATF fluids" doesn't meet the sniff test. Anywhere, especially not here. Toyota's ATF isn't anything like what being used in "other" trucks. Just sayin. Seriously....

 

Am I in trouble....again....

 

Side bar:
I got official custody of Manny today so I'm in a great mood. Finally.... You can delete this post. Just wanted to let you know!

 

He might, but he's got an external transmission cooler, and he's got a 2014 or 2013 truck. It's not even the same concern as The 2019 and 2020 Tundras are completely different from that truck. But as he states he has a thermostat. At thermostat doesn't even open until 220. The number one killer of Transmissions is heat. Why would you want to keep all of that heat in there when fluid temps under 200 degrees are ideal? Don't you find it kind of funny that Toyota does not and will not publish what the decomposition temperature is of WS transmission fluid?

It's a temperature? It's not the fluid specifications showing how that fluid is composition wise

 

I think its pretty obvious at this point that someone here with a 19-20 needs to sacrifice their tranny so that we can finally get a definitive answer to this conundrum. We will need a few volunteers to tow heavy loads night and day until explosion occurs, and before their warranty expires. You won't be compensated, but you will be thanked. My 19 is excluded of course, because this is my idea.

 

They’ll get to 60k long before anything bad happens. Better find someone with an extended warranty.

 

Duly noted and amended.

 

I’d do it but 215 is about as high as I’ve seen on my 2017.

 

Alex and I both watch trans temps and compare, there is no issue imo.. We always end up crawling slow, the cooler above my condenser coil literally does nothing at this point, probably hurts cause it’s heat soaked from always running the ac. Hitting the trans temp warning just means chill out, go past and it won’t let you hurt it, I tried lol.

 

@sgtfluffy16 , Corey, you are new here. Cool. Glad you are here! We appreciate your opinion and quite frankly your fortitude on bringing this issue up... but we have some very knowledgeable folks here. Like @ColoradoTJ stated, @osidepunker beats the holy crap out of his tunny. I remember early on here that I questioned him for some stupid reason. Forgot now what it was. Got my attitude corrected quite quickly. Go with the flow with us... we will support you....we are not against you. We can be sarcastic at times. The longer you stay here you will understand.

 

What testing do you think Toyota is going to do that they haven't done already? They hammered on this truck at Davis Dam and found that they still had enough headroom regarding trans temps.

 

By adding that cooler you realize that you most likely voided your warranty regarding transmission issues, right? The Magnuson-Moss acts protects consumers to a certain extent, but in this case you are directly modifying the transmission in the eyes of Toyota.

 

Hey Diesel, and a gas truck are completely different platforms. But the transmission fluid temperatures are it will be the same operating ranges across the board. Meaning they'll be similar buy a range. But they all won't be identical. Some will be higher, some will be lower. As different transmission fluid and different Transmissions are built differently by manufacturers. But I do see your point. Maybe there is nothing wrong, but if there's nothing wrong why can I not get basic information about the Ws transmission fluid? Why do they not have normal operating temperatures listed?

I think the failures that have come out already are few far and in-between because even if you drive your vehicle a lot. I bet there is no 2019 trucks out there yet with more than 50 or 60 thousand miles. They say that this transmission fluid is good for a hundred thousand miles. So it's going to take some time until someone sees that mileage. But my assumption is when the transmission start to blow up they're all going to be around the same mileage and it's going to be a whole bunch of them all at once. Technically this truck has barely been out two full years so at the moment it's just kind of a waiting game. I'm trying to be prepared and do my due diligence ahead of time so that I have a plan already lined up ready to roll. Because this is not only going to help me, this will help the thousands of other members on here and on the forums

 

Why can't you get details fron Exxon or Toyota about the fluid or transmission? Because that's proprietary information they don't want out there on the open market where their competitors can see it.

Try getting this same info from GM or Ford or from Shell or BP. I guarantee the answer will be the same. It's not some big conspiracy by Toyota; they're just not going to give design information to every person on the street who asks for it.

 

Go look at the MSDS that I posted earlier. Toyota specifically States it as "not disclosed" the temperature of decomposition. I'm not asking for the chemical composition of their proprietary fluid. I'm asking for temperatures of the fluid and its ratings. I've also asked what the normal operating fluid temperatures ranges that the transmission should be operating within. They can't answer that for me either.

 

Ass hole..with all due respect of course

 

Can you link any reported and verified transmission failures with the MY19/20 Tundras? A good starting point...

 

Adding fire...

The 2020 has a supplemental transmission cooler and temperature gauge!

http://media.toyota.ca/releases/rug...size-pickup-truck-thats-always-up-to-the-task


“Tundra’s no-so-secret formula starts under the hood, with a 32 valve 5.7 litre i-FORCE engine that generates an impressive 381 horsepower and 401 lb-ft of torque. Mated to a six-speed automatic with sequential shift mode and tow/haul capabilities, this powerhouse enables Tundra to tow anywhere from 8,800 pounds to 10,000 pounds, depending on model. All Tundra models are factory-fitted with a tow package – featuring heavy-duty tow hitch receiver, four and seven pin wiring harness, supplemental transmission cooler, and a transmission fluid temperature gauge – so you’re ready to start hauling right out of the Toyota Dealer.”

So what are you all worried about!

 

It’s also in the published in the Tundra brochure currently on toyota.com and toyota.ca.

There actually could be a false advertising case.

 

They are referring to the coolant heat exchanger which technically cools the transmission fluid once the ATF is hotter than the coolant.

 

I wouldn’t consider that “supplemental”. By adding that word it is clearly calling out a unique difference for the towing package.

 

Pretty sure every 2019/2020 made has the tow package so you can’t really have a distinction.