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Scan tool recommendation for trans temp detect mode when changing fluid

Discussion in 'Technical Chat' started by Brutescissors, Apr 22, 2023.

  1. Apr 22, 2023 at 12:04 PM
    #1
    Brutescissors

    Brutescissors [OP] New Member

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    Looking to see if anyone owns or can recommend a affordable scan tool 100-300$. Its for my 2014 Tacoma. I want the tool to be able to place the truck in the trans temp detection mode instead of having to jump the pins on the diagnostic port and move the shifter back and forth. along with other useful scan tool features I might not know that I need or a cheap one may not have. never owned an automotive scan tool before but I am a heavy equipment technician with many years of experience . I don't know if all the scan tools can do this or not. thanks for the advice
     
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  2. Apr 22, 2023 at 7:55 PM
    #2
    Dm93

    Dm93 Test Don't Guess

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    No need to use check mode when using a scan tool, you can read transmission temperature directly (needs to be 95-115F when checking).

    There's a ton of scan tools out there, enhanced scanners can range from around $100 to over $10,000 it just depends on the brand and what functions it has, typically your gona be in the $400-500 range for a decent standalone full function scanner with bidirectional support.

    If you have a decent Android or Iphone the ThinkDiag bluetooth dongle is about the cheapest full function scan tool at ~$110 but it does cost around $70 a year for the enhanced functions, it comes with 1 year free and they run specials pretty often.

    If you want something full featured that's standalone the Autel MK808S $479 supports all systems and has active test support.
    If you don't need active test support but want all systems codes and data there's the Autel MD 808 Pro at $279

    There are plenty of offerings from Autel, Launch, ThinkCar and others with prices all over the place just do your research before buying and make sure what your looking at has the functions you want.

    Just a disclaimer I don't own the MK 808S or the MD 808 but I do have a MS 906BT and am happy with it, I also have the ThinkDiag and it seems to work good as well although it doesn't seem to like Chrysler stuff all that much.
    I also have a SnapOn Verus Edge that is my daily but that one is a bit beyond the DIY budget.
     
  3. Apr 23, 2023 at 7:38 AM
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    MR5X5

    MR5X5 Well-Known Member

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    An IR gun works fine, just shoot for mid range temp and you'll be in the window. I have verified this to be the case.
     
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  4. Apr 23, 2023 at 7:54 PM
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    boston23

    boston23 Well-Known Member

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    Wow, thanks for writing all that up. There’s really no cheap scan tool that can read your trans temp?
     
  5. Apr 23, 2023 at 8:24 PM
    #5
    Dm93

    Dm93 Test Don't Guess

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    If you just want to read trans temps there's plenty stuff under $100 but if you want something that will do all modules your gona be over $100.
     
  6. Apr 26, 2023 at 7:05 PM
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    Spike Strip

    Spike Strip Well-Known Member

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    This site contains affiliate links for which the site may be compensated.
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  7. Apr 26, 2023 at 7:11 PM
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    Enigma8246

    Enigma8246 Well-Known Member

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    The best 'mod' I have ever done to my 4Runner was putting a ScanGauge II in the center console. I had to program in the code for reading trans fluid temp but it does work. I believe mine was just under $200 at Auto Zone. Just verify on their website that it can be programmed for trans temp for your year Tacoma.

    An example: A couple of months ago the check engine light came on while driving around town. While at a stop light I pulled the code and Googled it. "MAP sensor reading out of tolerance" or something to that effect. Cleared the code and thought "if it comes back on I'll clean the MAP sensor." All of this before the light turned green and the code hasn't come back so far.
     
    Last edited: Apr 27, 2023
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  8. Jun 30, 2023 at 11:32 AM
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    K-ross

    K-ross New Member

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    Is there any programs that use the elm327 for ecu programming and diagnostic. I have forscan for Ford. Was hoping to find something similar for Toyota. Main reason was to see if transmission temp display could just be unlocked or made to display on dash
     
  9. Jun 30, 2023 at 12:05 PM
    #9
    Dm93

    Dm93 Test Don't Guess

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    As far as I know the ELM327 interface can only read codes and data and doesn't support bi-directional controls or programming.
    I don't think there's any way to add a trans temp display on Tacomas, you have to have a scangauge or other scanner that can display it.
     
  10. Jun 30, 2023 at 6:29 PM
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    K-ross

    K-ross New Member

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    So forscan is a pc program that uses an elm327- USB and allows you to change/edit modules but it is Ford specific. I've used it to unlock GPS/ navigation in a 13' Ford fusion. So elm327 is bidirectional you just need a controller "program" to read and send data
     
  11. Jun 30, 2023 at 7:00 PM
    #11
    Dm93

    Dm93 Test Don't Guess

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    Ah I knew about ForScan but I didn't know what interface it used, I always thought ELM327 was read only.

    There's no such thing for Toyota that I'm aware of although there's some bootleg copies of Techstream and Mongoose cables lurking around on Amazon and Ebay but use those at your own risk.
    Many aftermarket scan tools can change settings as well but there isn't a whole lot of stuff that can be changed, most of it has to do with lighting and door locks I belive.
    Someone posted a list of available settings somewhere, I'll see if I can find it.
     
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  12. Jun 30, 2023 at 7:10 PM
    #12
    Dm93

    Dm93 Test Don't Guess

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    Here's the list of customizable parameters at least for 16, I'd imagine 19 would be pretty much the same.
    https://www.tacomaworld.com/threads...ommon-techstream-customizable-options.429205/
     
  13. Jun 30, 2023 at 7:35 PM
    #13
    VTCAL

    VTCAL Well-Known Member

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    Come on!

    The temp range is barely "warm to the touch"
    You do NOT need to have an accurate temp probe. Just not dead cold, AND NOT HOT
     
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  14. Jul 7, 2023 at 1:51 PM
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    NmapFE

    NmapFE Well-Known Member

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    So here is one I came across that reads trans temp AND does the TPMS relearn…just a few over $100 but close… I think I’m going to try it out…
    IMG_2799.png
     
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