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Can elm327 help diagnose a transmission issue?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Sf3gen, Jul 23, 2020.

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  1. Sf3gen

    Sf3gen New Member

    Joined:
    Jul 23, 2020
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    Vehicle:
    2010 Prius
    Model:
    N/A
    Made the mistake of doing a full drain and refill on my transmission fluid at 180k. There is now a slight hum/vibration when the engine is on. Which functions can I check using an ELM327 that could help me diagnose?
     
    #1 Sf3gen, Jul 23, 2020
  2. Raytheeagle

    Raytheeagle Senior Member

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    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Welcome to Prius chat(y).

    Some questions:
    • How many quarts of fluid did you put back after draining?
    • What fluid did you use?
    • Any dash lights on?
    • Is the noise or vibration only on when the engine is on?
    Good luck and keep and keep us posted (y).
     
    #2 Raytheeagle, Jul 23, 2020
  3. Sf3gen

    Sf3gen New Member

    Joined:
    Jul 23, 2020
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    Location:
    USA
    Vehicle:
    2010 Prius
    Model:
    N/A
    I got it done at a shop so I'm not sure if they refilled the full 4 or the exact same amount that was drained, but I can get that info if its important. I know sometimes less than 4 will drain out. I made sure they used Toyota fluid.

    There are no dash lights. And yes, only slight noise/vibration when the engine is on. It speeds up as I speed up and slows down when I slow down.

    Thanks for answering!

    Also, I have driven the car for two weeks with no dash light, including two longer drives, around an hour and a half each.
     
    #3 Sf3gen, Jul 23, 2020
    Last edited by a moderator: Jul 23, 2020
    Raytheeagle likes this.
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