I was told by a Toyota tech that that unit underneath with the hoses is actually a transmission fluid heater that gets the transmission fluid up to operating temperature quicker using engine coolant with a thermostat when the fluid is cold. On the prior units with a Transmission cooler another unit is sandwiched in between with return hoses heading back to the radiator mounted external cooler and is also thermostatically controlled.
The Water to Fluid Cooler on the Transmission is designed as more of a Transmission Warmer for Cold Climate areas. This will circulate Engine Coolant through Transmission to help warm it up to Operate properly when its Freezing Outside. We have a 2021 Crewmax, I just purchased the Scan Gauge 2 to see Transmission Temps. I am trying to figure which External Trans Cooler I want to go with. Great Video Thank you.
@@repairvehicle Yep, Watching it right now! I will watch other Videos, I like your Channel, just Subscribed!! I use Amsoil Products as well! Thank you for all the effort to provide Videos, it really helps to make Decisions. All the Best! Thx again
Not sure why toyota is deleting key components that keep a truck reliable, disappointed to find no trans cooler on my 19' tundra, my first and probley last toyota if this is their new way of doing things
2019 tundra and I row a 25’ trailer. 7000#. No issues. I asked the dealer if the tundra has had issues with the transmission and no cooler. They stated they have never seen a failure. So everyone who is calling Toyota stupid. How about you prove that transmissions are failing! Prove that it is an issue! Prove that Toyota is wrong.
Why tundra used transmissions sold for high prices on eBay? Because they fail and running transmissions at 230F degrees cuts transmission life significantly. Do some research on transmission fluid temperatures. Dealer will not tell you the truth, they know you will be back soon for new tundra or transmission repairs.
@@repairvehicle I can say the same about used Chevy ford and dodge transmissions! Again, show proof that the transmissions fail! Prove it! Showing used transmissions on eBay is not a strong argument
I'm trying to figure out why Toyota did this? It was already there and they went out of their way to De-engineer the truck. Do you have any insight on why they did it? I have a 2021 5.7 and tow about 4,000lb. Should I be worried?
It saves time and money because they have less things to connect upfront on assembly line. It depends how often you tow, change atf fluid and where you live.
@@repairvehicle It's still dumb thinking in my opinion. Why risk their reputation? I tow a couple times a year. I may put one on just for peace of mind. Thanks for the reply
I don't plan on towing as much weight you are,but I installed cooler as soon as I got home from the dealer. Relatively easy install with Toyota transmission thermostat, and hardliners under the motor to the front to a after market racing radiator. I leave the transmission thermostat pinned during the summer and plan on pulling the pin for the winter. My transmission temperatures are no where near what some owners are reporting without the cooler. I also installed an inline magnifine transmission fluid filter, just before it enters the cooler. Just my two cents.
I’ve read somewhere that they use a different ATF that does not degrade at hotter temps so they did away with the external transmission cooler. Not sure if that info is accurate though
I just bought a 2021 Platinum Tundra that I plan on using to tow my Kubota B-2601 tractor with loader bucket and implements . The trailer is a dual axle HD trailer sticker says it weights 1500lbs by itself. Tractor is probably 3500 Lbs with bucket . I’m kinda worried 😦!
@@repairvehicle Hopefully 🤞 it won’t overheat towing my big Kubota several hundred miles to another state where I own property? Lol 😬. It’s still under factory warranty so ?
@@repairvehicle I’m in New England but will only be towing north during the warmer months to cut and maintain 4 acres with the tractor until I get my steel storage building built . Then the towing loads should be less.
In videos I have seen…a pin is put in thermostat to get transmission fluid to a certain temperature. Then D for drive remains lighted even though vehicle is in park
That explains why my 2019 Tundra transmission fluid is at 225 on the road without towing. My 2005 Tacoma trans fluid temp on the road 6:40 with the external cooler is 125. Oh boy. I hope the tundra tranny last like my Tacoma.
no need to avoid it. I picked up a 21 and will be adding a cooler here soon. I've done some towing and had no overheating but I still want to add a larger cooler here soon.
You not going to see overheating light to come on. Toyota have adjusted software so that light will no come on even if it's overheating. Temperature over 220F is already overheating transmission fluid and transmission components on the inside.
It's not just transmission cooler has not been installed on 4.6. Also, engine oil cooler has not been installed. Towing without coolers definitely shortens engine oil life and transmission fluid life. But, heat generated inside without cooler has negative effect on transmission components and shortens its life. 4.6 is a great truck but without cooler it has limitations.
Bro that's your pump not cooler and on top of that I have a 19 tacoma and it has a trans cooler it's on the front of my radiator clear as day but you are right about one thing some don't have it only the ones with the towe packages do.
@@repairvehicleby all accounts that's a warmer, and it COULD provide dome cooling as engine coolant temp is approximately 195F. However the cooling is MINIMAL. I have a 2020 Tundra w/ a towing pkg. It has no fluid to air cooler. Using a scan tool which I bought today, just driving 10 miles, towing nothing, my pan temp reached 207F and my torque converter temp reached 216F. Other TH-camrs, towing 8000lb with the same Tundra setup reached pan temperatures of approx. 245F. IMHO that's too hot, although Toyota says it's fine.
They tan g to he same test with a Chevy Silverado that had trans cooling lines going inside the engine radiator and the max temp was 214F. That's 31F difference. Toyota engineers said all's good to 250F. I'll be putting in a fluid to air cooler, because I want to get 200k+. Bought it used with 106K.
Give me a liquid to air cooler anyday. You know what happens when a liquid to liquid cooler leaks either way, and it is fairly common ?? Much grief and many $$$$$$$. Seen it too many times.
Best installation video on TH-cam for tundra cooler th-cam.com/video/41UM0Hg1-Wc/w-d-xo.html Thank you for watching! Don't forget to subscribe, click the bell, like and share this video with others.
I was told by a Toyota tech that that unit underneath with the hoses is actually a transmission fluid heater that gets the transmission fluid up to operating temperature quicker using engine coolant with a thermostat when the fluid is cold. On the prior units with a Transmission cooler another unit is sandwiched in between with return hoses heading back to the radiator mounted external cooler and is also thermostatically controlled.
The Water to Fluid Cooler on the Transmission is designed as more of a Transmission Warmer for Cold Climate areas. This will circulate Engine Coolant through Transmission to help warm it up to Operate properly when its Freezing Outside.
We have a 2021 Crewmax, I just purchased the Scan Gauge 2 to see Transmission Temps. I am trying to figure which External Trans Cooler I want to go with. Great Video Thank you.
I have a video on my channel with cooler temperatures and without.
@@repairvehicle Yep, Watching it right now!
I will watch other Videos, I like your Channel, just Subscribed!! I use Amsoil Products as well! Thank you for all the effort to provide Videos, it really helps to make Decisions.
All the Best! Thx again
Thank you for subscribing and watching videos.
Thank you.
So my 2017 I just bought doesn't have the traditional, finned transmission cooler in front of the radiator?
No
Great video I guess even more reason to add AMSOIL atf!👌👌
Good point.
Not sure why toyota is deleting key components that keep a truck reliable, disappointed to find no trans cooler on my 19' tundra, my first and probley last toyota if this is their new way of doing things
Ford did same thing started 2018 and up. Ford and big 3 using plastic oil pan on transmission, it's a guaranteed failure.
It's easy to add, I am in process of installing and videos will be coming
@@repairvehicle I added one myself, check out the video of it on my channel
my video will be very detailed and installation will be done differently to take full advantage of the cooler. thanks for watching and commenting.
they did not do away with cooling.....it cools while going thru the radiator....you heard him
2019 tundra and I row a 25’ trailer. 7000#. No issues. I asked the dealer if the tundra has had issues with the transmission and no cooler. They stated they have never seen a failure. So everyone who is calling Toyota stupid. How about you prove that transmissions are failing! Prove that it is an issue! Prove that Toyota is wrong.
Why tundra used transmissions sold for high prices on eBay? Because they fail and running transmissions at 230F degrees cuts transmission life significantly. Do some research on transmission fluid temperatures. Dealer will not tell you the truth, they know you will be back soon for new tundra or transmission repairs.
@@repairvehicle I can say the same about used Chevy ford and dodge transmissions! Again, show proof that the transmissions fail! Prove it! Showing used transmissions on eBay is not a strong argument
@steve4658, price of used transmissions is high because demand drives up the cost. Simple logic.
yes please make the cooler option video.
What do you have?
I'm trying to figure out why Toyota did this? It was already there and they went out of their way to De-engineer the truck. Do you have any insight on why they did it? I have a 2021 5.7 and tow about 4,000lb. Should I be worried?
It saves time and money because they have less things to connect upfront on assembly line. It depends how often you tow, change atf fluid and where you live.
@@repairvehicle It's still dumb thinking in my opinion. Why risk their reputation? I tow a couple times a year. I may put one on just for peace of mind. Thanks for the reply
of course its dumb.
I don't plan on towing as much weight you are,but I installed cooler as soon as I got home from the dealer. Relatively easy install with Toyota transmission thermostat, and hardliners under the motor to the front to a after market racing radiator. I leave the transmission thermostat pinned during the summer and plan on pulling the pin for the winter. My transmission temperatures are no where near what some owners are reporting without the cooler. I also installed an inline magnifine transmission fluid filter, just before it enters the cooler. Just my two cents.
I’ve read somewhere that they use a different ATF that does not degrade at hotter temps so they did away with the external transmission cooler. Not sure if that info is accurate though
Great info. Thanks I have 2018 5.7
Please subscribe. I have ton of maintenance videos on my channel for your tundra.
I would like to see the air cooled install.
Starting this week, stay subscribed
I just bought a 2021 Platinum Tundra that I plan on using to tow my Kubota B-2601 tractor with loader bucket and implements . The trailer is a dual axle HD trailer sticker says it weights 1500lbs by itself. Tractor is probably 3500 Lbs with bucket . I’m kinda worried 😦!
Nice truck!
@@repairvehicle Hopefully 🤞 it won’t overheat towing my big Kubota several hundred miles to another state where I own property? Lol 😬. It’s still under factory warranty so ?
If you live in warmer state then you should be fine. If you leave in colder state it will run hotter
@@repairvehicle I’m in New England but will only be towing north during the warmer months to cut and maintain 4 acres with the tractor until I get my steel storage building built . Then the towing loads should be less.
I subbed. Keep make video. Good job.
Thank you. More is coming.
2018 Camry se 2.5l has no cooler line that goes from transmission to radiator.
You have one of those coolers, round one
th-cam.com/video/41UM0Hg1-Wc/w-d-xo.html
I have 2020 1974 please let me know all part numbers to install external liquid to air transmission cooler!!!
I am working on the video installation and will be posting soon on my channel
stupidest cost saving measure I ve ever seen
There's no cost savings in cooler. Cost savings during assembly. No need to connect anything upfront and no need to adjust fluid level.
I likey the way you talk sir you know your shit.
What do you have?
@@repairvehicle 21 lunar rock
will I be able to get transmission fluid up to proper temperature to change/check level?
What are we talking about
In videos I have seen…a pin is put in thermostat to get transmission fluid to a certain temperature. Then D for drive remains lighted even though vehicle is in park
For changing transmission fluid
Don’t know. I know this works, TOYOTA WS ATF simple and easy with using scangauge.
th-cam.com/video/maK7HsGEEls/w-d-xo.html
Nothing new, my 2015 Sequoia Platinum 4x4 tow package doesn't even have a transmission cooler.
That's why I have added cooler to my 2012 Sequoia.
That explains why my 2019 Tundra transmission fluid is at 225 on the road without towing. My 2005 Tacoma trans fluid temp on the road 6:40 with the external cooler is 125. Oh boy. I hope the tundra tranny last like my Tacoma.
You just made me laugh!
So should u avoid buying a 19-21 tundra?
I would not avoid.
no need to avoid it. I picked up a 21 and will be adding a cooler here soon. I've done some towing and had no overheating but I still want to add a larger cooler here soon.
You not going to see overheating light to come on. Toyota have adjusted software so that light will no come on even if it's overheating. Temperature over 220F is already overheating transmission fluid and transmission components on the inside.
@@repairvehicle i bought a 21. No towing or anything yet. May add the cooler soon tho
Congratulations. It's a nice truck with proven reliable transmission and engine. Overall awesome truck.
Is it safe to tow with a 4.6 without trans cooler it has 6500 lbs towing capacity
If you planning to have trouble free transmission on the longrun, then towing without cooler is not an option.
What year is your 4.6?
2014 sr5 double cab 4x4 6.5 ft bed
It's not just transmission cooler has not been installed on 4.6. Also, engine oil cooler has not been installed. Towing without coolers definitely shortens engine oil life and transmission fluid life. But, heat generated inside without cooler has negative effect on transmission components and shortens its life. 4.6 is a great truck but without cooler it has limitations.
@@repairvehicle do i have to install bought of them or just the transmission cooler, i just want to be have a safe towing
Great video! Thank you !
Thanks
Thats a transmission warmer bro
Watch video again then. Engine has same thing except different shape and it’s called oil cooler. What are you going to say now?
Bro that's your pump not cooler and on top of that I have a 19 tacoma and it has a trans cooler it's on the front of my radiator clear as day but you are right about one thing some don't have it only the ones with the towe packages do.
Not true. My 2020 has a tow package and no cooler.
@johnvgig it has cooler, liquid to liquid, it doesn’t have air to liquid cooler.
@@repairvehicleby all accounts that's a warmer, and it COULD provide dome cooling as engine coolant temp is approximately 195F. However the cooling is MINIMAL. I have a 2020 Tundra w/ a towing pkg. It has no fluid to air cooler. Using a scan tool which I bought today, just driving 10 miles, towing nothing, my pan temp reached 207F and my torque converter temp reached 216F. Other TH-camrs, towing 8000lb with the same Tundra setup reached pan temperatures of approx. 245F. IMHO that's too hot, although Toyota says it's fine.
They tan g to he same test with a Chevy Silverado that had trans cooling lines going inside the engine radiator and the max temp was 214F. That's 31F difference. Toyota engineers said all's good to 250F. I'll be putting in a fluid to air cooler, because I want to get 200k+. Bought it used with 106K.
@johnvgig tundra atf temperature still goes above 220F with external transmission cooler, when towing or hailing or just accelerating
Give me a liquid to air cooler anyday. You know what happens when a liquid to liquid cooler leaks either way, and it is fairly common ?? Much grief and many $$$$$$$. Seen it too many times.
Liquid to air coolers worked well for past 100 years. Why eliminate, is just dumb move by Toyota.
Best installation video on TH-cam for tundra cooler th-cam.com/video/41UM0Hg1-Wc/w-d-xo.html
Thank you for watching! Don't forget to subscribe, click the bell, like and share this video with others.