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Transmission Cooler missing…I Know I know

Discussion in '2.5 Gen Tundras (2014-2021)' started by ColoradoCub, Sep 27, 2021.

  1. Sep 27, 2021 at 8:45 PM
    #1
    ColoradoCub

    ColoradoCub [OP] New Member

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    I just discovered that my new Tundra does not have a transmission cooler, like my 07, 10 and 13 did. What’s shitty is that the true damage to these transmissions running ridiculously high temps isn’t going to surface for a couple more years and most likely after the 60,000 mile powertrain warranty expires. So as a new owner you have to decide to drive the shit out of it since it’s under warranty knowing it probably won’t fail until it’s out of warranty or modify your truck now so that it lasts for many years and risk a dealer saying warranty has been voided because you installed a cooler. I live in southern Colorado, 5,000 ft 7 degree grade passes in high ambient temps is all summer long I can’t imagine what the tranny temps will be pulling my camper up those passes. Very disappointed in Toyota on this one. I’m looking at buying the Toyota thermostatic plate and some tranny hose and a basic cooler, can’t see spending $1,000 on a kit when it’s just two hoses and something for the fluid to flow through. Not happy!
     
  2. Sep 28, 2021 at 4:11 AM
    #2
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    :deadhorse:

    Cooler has been gone since 2019 and I think the forum is only aware of one failure so far.
     
  3. Sep 28, 2021 at 5:01 AM
    #3
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Yep, you need to add a cooler to avoid premature failure. Buy the factory steel lines, much better, if you get a roll of like 25 ft. Of 3/8 fuel line hose then you have enough to also do the rear diff breather relocate. Pick up the fitting for that from Amazon.
     
    mtndds98 and Mike59 like this.
  4. Sep 28, 2021 at 5:04 AM
    #4
    Tundra234

    Tundra234 New Member

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    Alot of them
    @chasenicholas93
     
  5. Sep 28, 2021 at 5:08 AM
    #5
    AzureNightmare

    AzureNightmare ASCM#1 Douchebag formerly known as 50 Buck

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  6. Sep 28, 2021 at 5:08 AM
    #6
    Bammer

    Bammer I'm disinclined to acquiesce your request.

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  7. Sep 28, 2021 at 5:15 AM
    #7
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    If concerned about warranty, one can remove it before going to the shop.
     
  8. Sep 28, 2021 at 5:45 AM
    #8
    Summitroad

    Summitroad New Member

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    True but, my understanding is that the cooler is back in the 2022 Tundra so, for me, that is a confirmation that is need it.
     
  9. Sep 28, 2021 at 5:48 AM
    #9
    ezdog

    ezdog New Member

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    So just spend $50 instead first and get an OBD monitor and see if you are even in the danger zone before going too crazy.
     
  10. Sep 28, 2021 at 5:52 AM
    #10
    Tundratoofun

    Tundratoofun redline redneck

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    I'm willing to bet that half the people whining about a cooler have never even seen the trans temp warning light up. They just think they know better than an engineer who was hired by a major manufacturer to do engineering. He still has a job too so he must not have fucked it up too bad. Bet!!
     
  11. Sep 28, 2021 at 5:55 AM
    #11
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    Well, Toyota calls the coolant to transmission fluid heat exchange "puck" a cooler or "warmer/cooler" (after calling it a warmer in past years). I have yet to see any confirmation that the 2022 has an air to ATF exchanger, though I'll admit to not having watched every video that's out there.

    The 2022 also has a completely different transmission.
     
  12. Sep 28, 2021 at 5:58 AM
    #12
    Black Wolf

    Black Wolf Where's my popcorn salt? Damnit

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    First I've heard of this issue......
     
  13. Sep 28, 2021 at 5:58 AM
    #13
    Bammer

    Bammer I'm disinclined to acquiesce your request.

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    I'll take that BET and you're gonna regret.........
     
  14. Sep 28, 2021 at 5:59 AM
    #14
    bsktball55

    bsktball55 New Member

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    Have any of you actually put a temp gauge on the truck to see what your temps get up to without the transmission cooler compared to the older trucks that had them? Just curious if there is a significant difference in temps to even be worried about.
     
  15. Sep 28, 2021 at 6:07 AM
    #15
    AzureNightmare

    AzureNightmare ASCM#1 Douchebag formerly known as 50 Buck

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    Completely different engines so that's an apple to oranges comparison you are drawing your conclusion from. Turbos cause heat you know, and it's a new transmission... and gearing... and aerodynamics.

    Your comment is akin to saying that we need more engine cooling because a supercharged truck does.
     
  16. Sep 28, 2021 at 6:09 AM
    #16
    Tundratoofun

    Tundratoofun redline redneck

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    What's the wager? Something small, I have about 3k in truck repairs coming up (none of which are trans related) $20, $50? I say $50. And it should be in normal use, towing can be included but not some ridiculous weight in 100 degree ambient Temps... clearly those are not normal operating conditions
     
  17. Sep 28, 2021 at 6:10 AM
    #17
    Tundratoofun

    Tundratoofun redline redneck

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    Let's see pics of the temp readings yall are getting so I can win this bet. :D:rofl:
     
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  18. Sep 28, 2021 at 6:11 AM
    #18
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Yep got mine up to 260 before a cooler, pulling empty tandem axle 6x12 enclosed at 80 mph rolling hills. Scan guage 2.
     
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  19. Sep 28, 2021 at 6:11 AM
    #19
    blanchard7684

    blanchard7684 New Member

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    Heavy towing or long uphill trails you need a cooler.

    everything else is ok.

    I’ll say though the ab60f is a remarkably tough transmission and waiting for it to fail in statistically significant frequency is a fool’s errand.
     
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  20. Sep 28, 2021 at 6:14 AM
    #20
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    It didn't seem to me like there was that much anecdotal difference from what I've seen posted here.
     
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  21. Sep 28, 2021 at 6:15 AM
    #21
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Before a cooler mine would easily go to 270 or more if allowed. After cooler 210 max
     
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  22. Sep 28, 2021 at 6:17 AM
    #22
    blanchard7684

    blanchard7684 New Member

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    Pinned thermostat with mhx kit I saw 57 degree difference.
     
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  23. Sep 28, 2021 at 6:22 AM
    #23
    Oey12

    Oey12 New Member

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    I don’t mean to be provocative here… did you expect something different driving at those speeds with a small anchor (box trailer) attached? IMHO speed will kill a transmission due to excessive heat exponentially faster than towing at a reasonable speed.

    Towing at that speed is extreme duty…
     
  24. Sep 28, 2021 at 6:23 AM
    #24
    Tundratoofun

    Tundratoofun redline redneck

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    Light comes on at 300° right? I have seen it 1 time in my 2018, that was climbing a steep ass hill with 2 refrigerators and a stove in the bed.
     
  25. Sep 28, 2021 at 6:24 AM
    #25
    pman9003

    pman9003 New Member

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    Many of the members here have done that.

    Adding a cooler is only needed if you tow heavy/often and even then its still a maybe. Toyota knows what they are doing. I'm not concerned about warranty stuff but would rather have it and not need it, than need it and not have it. Since the thermostat is available, I saw no harm in adding one to my truck.

    Personally, just driving around empty my pan temps dropped from ~220F down to ~195F. The delta is even larger when loaded or towing. As a point of reference, the thermostat from the 07-18 trucks for the ATF opens somewhere around 195F (I think). I should mention I designed/built my own cooler mount, so my setup is slightly different from what most are running.
     
    Last edited: Sep 28, 2021
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  26. Sep 28, 2021 at 6:25 AM
    #26
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    Also outside of the manufacturer's recommendations.
     
  27. Sep 28, 2021 at 6:47 AM
    #27
    Bammer

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  28. Sep 28, 2021 at 6:50 AM
    #28
    gladecreekwy

    gladecreekwy Wyoming

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    I tow all summer without issue. Sorry but the engineers at Toyota haven’t steered me wrong yet. Looking for a solution to a problem that doesn’t exist
     
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  29. Sep 28, 2021 at 6:51 AM
    #29
    Tundratoofun

    Tundratoofun redline redneck

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  30. Sep 28, 2021 at 6:53 AM
    #30
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Pulled many heavy trailers many a miles at 75-85 mph with several different trucks. Only smoked 1 transmission and it had 400k on it plus ambient was about 100 f. Air movement cools. It's a matter of a good quality truck with enough torque to not shift often as well.
     
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