2019 2020 transmission cooler missing

Ill throw my 2 cents in here in regards to the OP . If i were you I would save myself the stress , time and effort you are putting into this . guaranteed you will not win against toyota corporate . Just spend the money , retrofit your truck with a cooler and upgrade the fluid , call it done and move on with life . why put so much energy into trying to be a hero here .... Pick your battles man . Its not worth it .

 

We are talking 2018 and older.

 

I saw a screen shot from the TIS system that stated 221 degrees. Ill try to find it but now sure if I can.

 

This one. The 221f is not the spec for WS.

 

Here you go

 

I was the one that posted that. The 221f is referring to the P0172 code and is not a spec for WS.

 

it specifically states ATF Temp operating range is 68F to 221F though

 

It's the condition that sets code P0172. It has nothing to do with WS.

 

This surprises me, coming from someone who had to argue with dealer(s) then going to Corporate before my issue got taken seriously.

If you choose to further pursue this...

This is how I see it going, personally, at least for you getting this response from Corporate.

Lightly bring it up with the dealer, they will blow you off. I'd bring it up to a couple nearby dealers. They will all probably blow you off, stating we saw no concerns and everything is operating as intended.

You will then need to pick one dealer, and start to push them more. More and more. Take them for a drive, show them the temps, etc. They will likely continue to tell you everything is operating as expected and they see no concerns. Likely, they will take you for a drive to compare a brand new truck off the lot. Then blow you off again.

Only once these steps have been taken, once calling Corporate back complaining that the dealer sees no issues - you request for a a field tech to come out and you want them to give you a case number. They might then start to take your concern seriously, once you tell them how much time you have wasted at the dealer.

Bigger concern now I see, summer is running out and so is the hot weather. If your wanting to follow up and raise hell, summer time is when this all needs to be accomplished due to the higher ambient temps even more so helping your case.

IMO, at least for you specifically, this seems like much more work than I personally would want to invest into something that seemingly will turn out to be pushed aside until Toyota starts to see enough failures that they cannot ignore it.

This is just based off my personal experience with a mechanical issue I had on my transfer case. Dealer did not listen to me, argued with dealers for about 5k miles until I said enough is enough...well, field tech came out and few weeks later a new transfer case was installed. Didnt come easy, to me my time invested was worth it though.

 

Either way can you find me a publication that states running a trans at above 220 is acceptable for normal driving? Everything I find says Trans should be ran at 175ish.

 

They gave me a case number already but I see your point. I agree that it would be easier to just drop a cooler on the truck and be done with it. My problem is I want assurances from Toyota that my fixing their fuck up will not void any warranties. If they require the work to be preformed by a Toyota dealer thats fine but they will pay the labor costs.

 

Toyota themselves had said that the warmer/cooler results in acceptable operating temps. They are right. Operating temps of 220f isnt going to harm anything. The problem comes from Tundra owners towing heavy trailers in warm ambient temps and seeing 250 plus temps. BTW, even with a cooler your going to see temps above 175f. Normal temps are 180-185 and towing will still see 200f.

 

viktorg, who has the 10 sec reg cab, is also running the mishimoto with no issues so far. He’s in Canada so we shall see how it goes in the winter.

 

Below is the response I have gotten so far that I posted in the other thread...

 

I get that but the truck is rated to tow 9800lbs, If Im towing 8800lbs I should not be seeing temps upwards of 300f. Several people have had this problem. The cooler does not result in acceptable operation temps when towing. Honestly during normal driving unloaded 235f is not acceptable either. Just because its not setting off a light does not mean its not drastically reducing the life of the Transmission, Clutches, and ATF Fluid.

 

Thank you for that post!

 

I hope not. That was the Nissan problem. The internal pipe failure leading to coolant ending up in the tranny. Result is a swift death of your transmission. Happened to me with my Pathfinder.

 

I've never found it on my truck....I just use my Scan Gauge II

 

Will a scan gauge get me trans temp on a 2019?

 

Yes.

 

yes, You will need to program the PIDs though, here they are

Copy the information below. Leave everything the same besides what I am telling you to change.

ATF Pan
Name: ATF Pan
Description: ATF Pan
English Units: F
Min Value: 0
Max Value: 300
OBD Mode: 21
PID Number: 82
Equation: ((((A*256)+B)*(7/100)-400)/10)

Torque Converter
Name: Torque Converter
Description: Torque Converter
English Units: F
Min Value: 0
Max Value: 300
OBD Mode: 21
PID Number: 82
Equation: ((((C*256)+D)*(7/100)-400)/10)

 

????????? Through the Scan Gauge?

 

Yeah, those are not the codes for the SG...

They're posted here somewhere on the forum...do a search

 

The PID numbers should be the same though.

 

You mostly repeated what I just said. As for the 235F you just can't assume that temp will kill the transmission. I dont know either and neither does anyone one this forum but I'm sure Toyota engineers certainly know.

It really comes down to this. If your not towing your not going to need the extra external cooler. Non tow package Tundras have been running this setup for years without issues. If your towing heavy and frequently put your big boy pants on and install a cooler.

 

I was actually planning on using the other thermostatic oil cooler adapter plate of this part number 32970-34030

Yes, I know this guy installed the cooler in correctly with the inlet and Outlet when it in the down position

 

I understand what you're saying, and you do have a valid point about cooling systems in a diesel. However their Transmissions are very different from ours. They are made to hold and handle the torque no, they are made to hold and handle the heat because diesels do not rev High. They are not a high temp engine to begin with because they don't have contained explosions within the engine like a gas engine does. Diesels run cooler. They always have compared to a gas vehicle. I do see your point though on the cooling systems. I think they do share some technology together, but I do believe they are very very different. But as you state, my end goal will be to add a transmission cooler to my truck. But as I have stated in the past I will, and obtain something in writing from the Toyota dealer stating I will not void my warranty using Toyota parts to install a transmission cooler

 

They told me this as well, keep pressing them until they give you a solid answer. My Toyota dealer said they didn't have that information and I had to call Toyota customer care

Toyota customer care actually told me this as well as posted a few pages ago. But I'm also looking for, and still waiting to hear from my ExxonMobil rep. We talked earlier today. Still no answer yet

Correct! There is nothing in TIS stating the specifications of WS transmission fluid. That is why I reached out to ExxonMobil, they told me they have to talk to Toyota can release that information to me. Still awaiting a response.

 

Because I want the approval, in writing, on a repair order, stating I am able to install a transmission oil cooler without voiding the warranty. If you read everything that I stated above and throughout the thread, this is the end result whether Toyota pays for it or not

 

You are correct it does say the ATF temp operating range. This is part of my ammunition when I go into Toyota. However, these are not the specifications of WS ATF fluid, but this should be a great point on the truck owner side that the transmission should not be exceeding 221 degrees because its stated right here!