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2017 Prius IV Warning Lights

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Adam Zinkus, Jun 6, 2024.

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  1. Adam Zinkus

    Adam Zinkus New Member

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    Hey all,
    All these warning lights keep popping on every so often. New battery. Drives fine. Anyone have any insight?
    Thanks in advance
     

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    #1 Adam Zinkus, Jun 6, 2024
  2. BiomedO1

    BiomedO1 Senior Member

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    The ABS code is the big concern; leave extra room when following someone.
    Start with checking the condition of your 12 VDC battery. You can take the car to any auto parts store for a free battery check.
    A low 12VDC battery will throw all kinds of erroneous trouble codes.
    Check the new battery connections at the post - see if they're loose.

    Good Luck...
     
    #2 BiomedO1, Jun 6, 2024
    Doug McC likes this.
  3. FuelMiser

    FuelMiser Senior Member

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    Have you owned the car since new? Has it ever been jump started?
     
    #3 FuelMiser, Jun 7, 2024
  4. Adam Zinkus

    Adam Zinkus New Member

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    The technicians at Toyota claimed they had to jump it when it was brought in for those lights a few months ago. The car has been brought in twice now but both times they were unable to diagnose it because the warning lights weren’t active. Then they pop back on a day or so after.
     
    #4 Adam Zinkus, Jun 8, 2024
  5. Adam Zinkus

    Adam Zinkus New Member

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    Aside from the techs claiming to have jumped it, it has never been jumped. Been in my girlfriends family since it was bought new.
     
    #5 Adam Zinkus, Jun 8, 2024
  6. BiomedO1

    BiomedO1 Senior Member

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    Take it to another dealer!!!
    1. They have an OEM scanner - they should be able to look at the error logs. Anytime your trouble lights turn-on they are logged!
    2. Error logs should point them in the right direction - problem doesn't need to be occurring to troubleshoot!

    Did the dealer replace anything else, besides the battery? Unfortunately, I'm seeing more and more of this everyday. People with proper certifications and degrees that can't do a simple troubleshooting job - even when a computer tells them what's wrong. They seem to be able to pass a written test but can't troubleshoot themselves out of a "paper bag"....

    Sorry, Stepping off my 'soap-box' now......

    Did you check for loose battery post connections?
     
    #6 BiomedO1, Jun 8, 2024
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