Urgent Help Needed - 2007,

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Joey T, Sep 18, 2025 at 12:57 PM.

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  1. Joey T

    Joey T Junior Member

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    Vehicle:
    2007 Prius
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    II
    I can reset both batteries and the car runs fine for 10 miles or so. Then all dash lights come on, including the triangle, AC stops blowing cold air, and the fan motor located by the passenger rear seat comes on. I had the car 10 years and never heard that rear fan come on. Please help, Thanks.
     
    #1 Joey T, Sep 18, 2025 at 12:57 PM
  2. dolj

    dolj Senior Member

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    You realise that when you "reset the batteries", it only gives the car amnesia until the fault reoccurs, right? It does not fix any fault the car has.

    You need to read the codes (or have the codes read) that correspond to each indicator light and report them here to get advice that will help you.
     
    #2 dolj, Sep 19, 2025 at 1:07 AM
    Last edited: Sep 19, 2025 at 12:52 PM
    Brian1954 likes this.
  3. JC91006

    JC91006 Senior Member

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    Sounds like your inverter pump might have failed
     
    #3 JC91006, Sep 19, 2025 at 2:42 PM
  4. Joey T

    Joey T Junior Member

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    Thanks so much for the replies. I replaced the inverter pump about 8 months ago and has run fine until recently. Also, I've had AutoZone check for codes with all lights on, and no lights on. Printout showing no codes either way. Based on their recommendation I've purchased a Toyota Techstream scanner but can't make heads or tails from it being "old, and not tech savvy"
     
    #4 Joey T, Sep 19, 2025 at 7:28 PM
  5. bisco

    bisco cookie crumbler

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    get an autel maxi 200 scanner.
    ref=sr_1_1_sspa

    was the inverter pump oem? a lot of bad counterfeit chinese junk out there these days.
    you can check for fluid movement in the inverter resevoir.

    might bad a bad hybrid battery, codes will help with diagnosis
     
    #5 bisco, Sep 20, 2025 at 2:17 PM
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