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Trans over temp warning; how to tell actual temp?

Discussion in '3rd Gen Tundras (2014-2021)' started by Cement, Apr 24, 2019.

  1. Apr 24, 2019 at 7:12 AM
    #1
    Cement

    Cement [OP] ...

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    Hey guys,

    I was out wheeling my 2019 SR5 DC (with approx 5k miles) this past weekend and did a lot of slow speed climbing over some pretty rough terrain. At one point, I got a warning on the dash saying the transmission temperature was too high and to reference the owner's manual.

    I pulled off and let it cool for about 10 minutes, and didn't have another warning all day. I'd wheeled it like this before and never saw this warning...

    Thoughts? Kinda surprised and wondering if it might have just been a fluke? Also I have the BlueDriver OBD reader and app, and was surprised to see there was no gauge for trans temp in it. Did I just miss it or is that info not available over the OBD port?

    Thanks in advance.
     
  2. Apr 24, 2019 at 7:30 AM
    #2
    ChrisTRDPro

    ChrisTRDPro New Member

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  3. Apr 24, 2019 at 7:31 AM
    #3
    blaserdude

    blaserdude New Member

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    Welcome to the 2019 model and integral engine/transmission cooling (i.e., no external cooler). Torque Pro App or UltraGuage MX will read transmission oil temperatures as will Scan GuageII. My 019 will run about 220F towing only a light load (1500#) unless you keep it in 4th/5th. Runs about 200 so just driving. I have seen the Torque converter outlet hit 250F. The oil gets hot pretty fast under 4 wheeling conditions since rpms are low and airflow is nil. I don't know the temperature where the trans temp warning comes on but it is probably around 280F. Dealer has not been forthcoming with this information.
    Good luck,
    bc
     
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  4. Apr 24, 2019 at 7:58 AM
    #4
    Cement

    Cement [OP] ...

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    Thanks guys.

    @blaserdude in TorquePro I see "Transmission Temperature (Method 1)" and "Transmission Temperature (Method 2)" Are these the ones to use and if so, which is which? Or did you add the PIDs manually via the method linked by Chris?
     
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  5. Apr 24, 2019 at 8:02 AM
    #5
    Greg Marmalard

    Greg Marmalard New Member

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    I had Scanguage II install but made me an over scrupulous temp gazer!

    I opted for OBD Fusion iPhone app and bought the $10 Toyota add-on which has trans temp installed. Worth $10 as opposed to messing with Scangauge. Provide both sensor temps.

    Scangauge a bit more sophisticated but for occasional simple use the OBD Fusion and a wifi dongle.

    If you or any one wants a cheaper brand new Scan Gauge with one trans temp installed.. PM Me!

    G
     
  6. Apr 24, 2019 at 8:18 AM
    #6
    proROB

    proROB New Member

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    this post is very fortuitous, I just bought the fusion app, and was checking and comparing dongles, which is the wifi dongle you got? the veepak or tonwon?
     
  7. Apr 24, 2019 at 8:21 AM
    #7
    Greg Marmalard

    Greg Marmalard New Member

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    And....

    Bluedriver does NOT offer a way to read trans temps. I almost went with it but did not because of this. This is true as of ~1 month ago although comments from BD said they are working on it...

    I recall when not extreme 4x with my 2000 4Runner temps ramping up pretty quick on simple slow grades. Going ~3-5mph up semi rocky terrain. The 4R had a good B&M ATF cooler too! Not fan driven but best non fan one they offered as I recall.

    Point being lack of air flow is the culprit.

    HTH

    G
     
  8. Apr 24, 2019 at 8:25 AM
    #8
    Cement

    Cement [OP] ...

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    Are we saying the reader itself doesn't support the PID, or their app? In other words, if I use the BlueDriver OBD2 reader, can I use TorquePro to pull the temps?
     
  9. Apr 24, 2019 at 8:25 AM
    #9
    Greg Marmalard

    Greg Marmalard New Member

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    I got the Foseal Improved Version Car WiFi OBD2

    https://www.amazon.com/gp/product/B077F8F6TB/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

    There's a few branded with same color scheme but different brands. I had one for like 5 years before and it never failed! I had just given it away when I decided to switch back to OBD Fusion.

    A little slow to connect on my iPhone and you have to select the wifi network from preferences and then "connect" in the app.

    Works great!

    G
     
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  10. Apr 24, 2019 at 8:28 AM
    #10
    Greg Marmalard

    Greg Marmalard New Member

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    Well I assume just the app since they said they are trying to design it to read them.

    I'd think the hardware would be able to access ANY information OBD can provide and only limits are what the app accesses.

    I'm not sure how the Bluedriver device works. May be proprietary to the app... You'd have to try..

    Really stupid they did not get the simple temperature sensors! TONS of basically worthless information for the typical owner and I doubt pros use this as a go-to.....

    G
     
    Last edited: Apr 24, 2019
    RookieEP and Cement [OP] like this.
  11. Apr 24, 2019 at 9:23 AM
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    blaserdude

    blaserdude New Member

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    Cement,
    Each OBD device uses its own format to read non standard data (e.g., trans temp). The codes listed by Chris for ScanGuage will not work on Torque or Ultra Guage. They all are hexadecimal oriented but that's where the similarity ends.
    bc
     
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  12. Apr 24, 2019 at 9:25 AM
    #12
    Cement

    Cement [OP] ...

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    Understood. So let me ask it another way; what are you using to get the temps? If TorquePro, for example, do you have whats needed to program it correctly? Thanks for all the help.
     
  13. Apr 24, 2019 at 9:29 AM
    #13
    blaserdude

    blaserdude New Member

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    Torque Pro
    PID: 2182
    Range: 0 to 300 (Fahrenheit)
    Multiplier: x1
    Equation:
    ((((A*256)+B)*(7/100)-400)/10) for pan
    substitute C and D respectively for TQ conv.
     
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  14. Apr 24, 2019 at 10:07 AM
    #14
    Cement

    Cement [OP] ...

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    That looks to be the ticket. Thanks again!
     
  15. Apr 24, 2019 at 10:30 AM
    #15
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    Fluid overheated? You should change it soon just to be safe.
     
  16. Apr 24, 2019 at 10:34 AM
    #16
    ChrisTRDPro

    ChrisTRDPro New Member

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    did not know this, thanks for sharing the info!
     
  17. Oct 3, 2020 at 6:32 PM
    #17
    MyActualName

    MyActualName New Member

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    I won't be able to test this out until tomorrow but THANK YOU. I was sad to not see any sort of transmission temperature in the Torque Pro app by default.
     

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