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Scan gauge 2 and prius Trans FLuid temp

Discussion in 'Prius v Accessories and Modifications' started by dangarlepp, May 5, 2016.

  1. dangarlepp

    dangarlepp Junior Member

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    Location:
    central florida
    Vehicle:
    2012 Prius c
    Model:
    Three
    I guess the prius (any prius) has no Trans fluid temp sensor. I tried all 3 general Trans fluid temp codes for Toyota and none work. Anyone have any info on this.
    Thanks
    Dan
    2012 Prius c
    2016 Prius v
     
    #1 dangarlepp, May 5, 2016
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    #2 JimboPalmer, May 5, 2016
  3. dangarlepp

    dangarlepp Junior Member

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    Thanks for the reply, I have been watching those temps. They get pretty high, into the 200 + degrees. At that temp the trans fluid would break down quick.
     
    #3 dangarlepp, May 6, 2016
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Are you grill blocking by any chance? Just curious. Yeah, maybe tri-yearly transaxle fluid changes warranted, regardless of distance. Fairly cheap and easy.
     
    #4 Mendel Leisk, May 6, 2016
  5. dangarlepp

    dangarlepp Junior Member

    Joined:
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    Vehicle:
    2012 Prius c
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    Three
    No grill blocking, I live in Florida. I had the scan gauge in my Prius c when I was monitoring the MG1 MG2 temps, when I saw temps at 200 degrees I wasn't sure if that meant the trans fluid was 200. I keep an eye on trans fluid temp because I ruined a regular auto trans by letting the fluid get to hot. Didn't realize, I was delivering mail, the slow stop and go heats up the trans fluid, the fluid turned black and killed the trans in a 1996 corolla wagon. I'm due to change the fluid soon in the C. Thanks for your help.
    Dan
     
    #5 dangarlepp, May 6, 2016
    Mendel Leisk likes this.
  6. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    In that sense, you do not have an automatic transmission, you have a one speed manual with no clutch.
    A 'normal' automatic has a torque converter which allows slippage between wheel speeds and engine speeds, all that slippage becomes heat. In the Prius transaxle nothing slips*. so there is MUCH less heat from friction when accelerating. Its heat is from the motor/generators, not friction.

    I found this accurate and hilarious. What it calls a fluid coupling we now call a torque converter

    None of this happens in a Prius.

    *Computers rotate two electric motors and the gas engine at different speeds to smoothly drive at any speed.
     
    #6 JimboPalmer, May 6, 2016
  7. dangarlepp

    dangarlepp Junior Member

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    Location:
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    Three
    Cool OLD video.
    It still bothers me that the MG1 and MG2 temps are so high (210 to 215F).
    So to ease my mind, your telling me these high temps are OK right?
    If you guys have a chance, check your MG1 and MG2 temps and let me know what you see.
    Thanks
     
    #7 dangarlepp, Jul 8, 2016
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