Transmission cooler missing…I know I know

The Kia has less sag than the Tundra! I wonder if it has a cooler?

 

Not taking any bodies side here, but I think that what you had mentioned is what he is referring to as comfortable. I know it is for me, the whole package and not just the specs.

I towed a fiberglass top from WA to CA on a tandem axle flatbed with a diesel super duty. The top would have been within the payload of my bed let alone my GCWR. The size of it made for a great sail and it put me at the edge of my comfort zone. Just an example.

 

No I gotchya… and I see what your saying.

My experiences come from driving class B and C (no tractor trailers) commercial trucks. And I have driven with those trucks at near max capacity and didn’t feel nervous however I drove accordingly meaning slower to the point that I was confident in knowing I could maneuver the truck. Commercial trucks are much beefier than a 1/2 ton but I feel the same principle applies. When I could I would chose a larger truck than necessary for the delivery. It allowed for a bigger “safety barrier” to not hurt myself or others. A Tundra can EASILY be driven at 90 but it’s a false sense of security in the end…

 

I agree with you 100% that these ever rising tow ratings from the manufacturers in competition with each other are complete and utter BS. No way I would put my family in a F150 and tow 12,000 lbs, especially a camper, that’s a disaster waiting to happen. It might work fine every day until the day it doesn’t! I used to haul very heavy loads regularly, loads that weighed 3x what my truck weighed, and even with 3 axles on the trailer all equipped with brakes I can’t count how many times I would leave adequate braking distance between me and the vehicle in front of me for safety and some jackass would jump in there and make me stand on the brakes. Even a slight malfunction and it’s over. These little pickups have their limits. There’s also a huge difference between towing a large camper which acts like a sail both from the front and the sides vs a lower profile load like a boat. The thing that really dumbfounds me is these payload ratings, some of the half tons have almost the same payload as mid sized SUV’s, I don’t know where they are getting those numbers because I have exceeded the payload on every half ton truck I’ve owned, the weights are ridiculously low. Hypothetically a crew max tundra with a 38 gal tank and 4wd is rated to carry 4 guys and a large Yeti full of beer and ice in the bed, seriously?

 

I had to sit down with my dad and show him the numbers about payload and tongue weight to show him that his F 150 is not suited for his new camper, even though the salesman said it was perfectly fine. He has since upgraded to a 250 and a fifth wheel. He had no trans cooler on the 150 and he was 400 pounds over weight ! I don't know the spec's, but back in the day there were "Camper Specials" and "Heavy Halfs", a specialty truck. Now its do more with less.

 

Well , I decided to go ahead and order the kit and install it myself .
even though I never had any issues towing my 4200 lb trailer for three years now ( my temps always averaged 215 towing ) , I want to be able to not constantly worry about it when I tow especially with the upgrade to a bigger trailer 6000lb loaded.

With the addition of a third kid , that can only mean one thing , more weight added .

I am sure that the tundra as is would do just fine especially the way I drive , but with the cooler , I won’t have to monitor as much as I do now and just enjoy my camping trips more with the kids.

I went through the instructions and YouTube videos and it seems fairly easy to install , will take my time and set up the cooler first and hard lines and leave the thermostat to the end .
Will install it in the next couple weeks after I pick up my new trailer from Vermont , like this I will see if the heavier trailer made any difference with temps from what I used to see and will report back to this group

 

Now its pay more, receive less! Hence, no auxillary cooler with a tow pkg.

 

You’ve been keeping close tabs and a voice of reason through all this ... but prepare for a big relief. It is really nice to drive and not worry about temps!

 

Push T/H, drop it in "D" and

 

Bingo! I’ve said that several times in this thread, all these folks towing in 4th gear on the highway boggles the mind. You have a stout automatic transmission with a tow haul feature, if the transmission has the ability to maintain proper temperature there is zero harm in running in D with tow haul. f$#&ing Toyota hosed those of us with 19-21’s so now so many have resorted to trying to keep their transmissions from overheating and driving the trucks in a protective manner rather than running it as designed. There’s no history of 2018 and older Tundra transmissions overheating and or failing!

 

And virtually no evidence of 1019-2021 Tundra transmissions overheating and or failing!

 

Ok! All the people who have had theirs overheat and send a warning message and report 260 deg temps when towing are a fantasy….got it. I dont know WTH is wrong with some you?

 

Do you understand the TSB? It's an ECM reflash because apparently some ECMs went out with incorrect settings? Nothing mechanical or fluid related is done.

Repair Procedure:
1. Does the vehicle exhibit a “High Transmission Fluid Temp” warning message on the instrument cluster MID when towing in tow/haul mode at highway speed?
YES — Continue to step
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.

2. Use Techstream to confirm if the ECM (PCM) calibration has been updated and check for the Authorized Modifications Label affixed to the vehicle in the location shown below. Is the calibration ID listed in Techstream and on the label the latest ECM (PCM) calibration.
YES — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual
NO — Continue to step 3

3. Flash reprogram the ECM (PCM).

4. Prepare and install the Authorized Modifications Label

5. Test-drive the vehicle to confirm proper operation.

 

I understand very clearly what the instructions for an ECM update are, which is what you posted , but no where in there does it say what they are actually updating or changing. The f@#$ing problem is that there isn’t a f@#$ing transmission cooler! There are posts like this one below all over the place, to play stupid or defend Toyota on this subject is ignorant or blind! Read the 4th line in the post below, there’s many posts on the Tundra Facebook pages on this subject with 19-21’s. Plus Chase has been selling those cooler kits like crazy on the Facebook pages too, not just this little forum.

 

LOL! Internet posts. Like yours? Who knows how many other places you spam?

 

Spam??? How does that even make sense. You put a cooler kit on your truck, why would you do that if you didn’t agree that it needs one?

 

I’ve seen two people smoke their new transmissions without the cooler. While not a ton - I don’t recall seeing any <100,000 mile failures on the 2014-2018 trucks.

 

Cmon dude, you must be spamming, everyone on the internet that has had a 19-21 Tundra reach very high transmission temperatures or overheat are liars according to the contradictory genius you responded to.

 

To be fair, that 1019 model came with a couple really beefy horses and thicker wooden spokes...

 

Found the guy that is a mall crawler and doesn't use his truck at all. Better get real close with your transmission guy because youll see him alot

 

It was feeling a bit tense in here...I can't help my clown tendencies.

But I am upset that my window sticker said I had a liquid cooled trans and I don't really...and my temps are far higher than my old GM.

 

I have no idea that Toyota quality sucked so bad. I guess we should sell and get a reliable truck.

a couple known failures out of 100,000 is enough proof for me.

 

Both sides are dismissing very important points that actually clarifies many things…

1.) A transmission temp of 260 or more is not comforting anyone…

So if you are reaching those temps by off-roading or towing the owner should probably add a cooler.

2.) Driver habits are CONSTANTLY being glossed over.

There are examples of cooler transmission temps while cited in this thread. But again everyone balks at 65 mph.

Or there are excuses that every other 1/2 ton can drive at 80 mph while pulling 10k. Then get a domestic…

What am I strongly starting to believe it that how the owner operates his or her 2019 to 2021 Tundra is going to determine whether a cooler is necessary.

 

Definately some BS that the trans mfg. Designed the tranny with a thermostatically controlled liquid auxillary cooler, and then some bone head designs a plate to disable and disguise it. Goes right along with the garbage they used for shocks on my truck. Garbage motor oil, garbage batteries, garbage brake rotors, garbage seats, garbage bed floor, garbage leaf springs, garbage sound sys., garbage front turn signals, gonna have another 20k in the truck by the time I get passed all the garbage.

 

Every mod, but one ?

 

Seems like a bit of an ignoratio elenchi there… the frustration derives from the idea that this tundra has been the “reliable truck” for the last few years, so when they make a change that appears to reduce that reliability with no added benefit to the buyer, it upsets some of us. Since there’s an option to add a cooler and remedy the situation, most of us with concerns are doing so…but it comes out of our pockets, which is frustrating.

 

And to make matters worse Toyota will not even support the owner in adding said cooler, in many cases advising the owner that their warranty coverage will be afffected! It’s BS anyway you look at it.

 

How many Boeing MAXes crashed before they decided there was a problem?

 

The bottom line is having an air-to-ATF cooler is better than not having one.