2016 Hybrid Battery 72-80%? Warranty?

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Brandon Kennedy, Nov 22, 2019.

  1. Brandon Kennedy

    Brandon Kennedy Junior Member

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    Hello! I downloaded the Dr. Prius app and ran a life expectancy test to see how the battery is doing. It tested 80% the 1st time but started before it could finish. 2nd time it made it to about 100 seconds left and started again but showed 72.73% remaining...

    I could attempt to do it again or a few more times but I feel as if the car starts before it fully completed the time it has on screen. This may or may not skew the results, maybe that’s how the app is designed. However my car is at 91k miles so I figured I’d test to see how it’s doing before it drops out of warranty... voltages are staying at .02-.01 apart, so very close nothing out of the area, blade voltage I think was staying between 3.4-3.8 range or so I believe

    main question is at what point does the Toyota warranty replace the battery? What percentage left? Would this cause any concern to you all? I have the four touring with the lithium pack
     
    #1 Brandon Kennedy, Nov 22, 2019
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    If the battery fails completely, it is covered by warranty.
     
    #2 JimboPalmer, Nov 22, 2019
  3. Brandon Kennedy

    Brandon Kennedy Junior Member

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    ah so they don’t cover it if it’s getting weak? I know most phone manufacturers replace batteries when capacity falls below 80%
     
    #3 Brandon Kennedy, Nov 22, 2019
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  4. alanclarkeau

    alanclarkeau Senior Member

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    There was some talk about this app a while ago - search PriusChat. (or GOOGLE, it's probably easier).
     
    #4 alanclarkeau, Nov 22, 2019
  5. sam spade 2

    sam spade 2 Senior Member

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    Make that ONLY if it fails completely......or fails bad enough that the car doesn't run right.
     
    #5 sam spade 2, Nov 22, 2019
  6. bisco

    bisco cookie crumbler

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    when the battery goes outside toyotas design parameters, the computers set a trouble code, and you see a dash warning light.
    until then, there is no warranty.

    take heart, i think you're in good shape.
     
    #6 bisco, Nov 22, 2019
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  7. Brandon Kennedy

    Brandon Kennedy Junior Member

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    Alright well that’s a plus. I did email the app creator (saw he’s on here too) and asked him if the test are being done right, wanna make sure it’s being accurate
     
    #7 Brandon Kennedy, Nov 22, 2019
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  8. robsnyder20

    robsnyder20 Active Member

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    Interesting, never heard of the app before. I would be interested to try on a new car to see how it reads out on one with fewer miles
     
    #8 robsnyder20, Nov 23, 2019
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    I've got the app, so far have just done the easy, static test. I wouldn't put too much weight in what it says, the percent. Maybe do the test again in 6 months or a year, see how it varies.
     
    #9 Mendel Leisk, Nov 23, 2019
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  10. ETP

    ETP 2021 Prime(Limit),24 Venza Limit,B52-D,G,F,H

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    Same with my body as it is very weak.:LOL:
     
    #10 ETP, Dec 8, 2019
  11. The Electric Me

    The Electric Me Go Speed Go!

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    As a energy storage device it's the nature of all batteries to weaken with age and usage. Therefore Toyota's warranty has to be based on a total failure standard, the battery works until it does not.
    Unfortunately, that means if your battery and vehicle is working, no codes being thrown, you're pretty much out of warranty luck regardless of what a diagnostic app may say about the fading health of the battery.

    In the past some owners have had some luck with pro-rated assistance from Toyota, if their HV battery failed shortly after passing warranty. However, I haven't heard a outcome like that in quite a while, but if your Hybrid Battery fails shortly past warranty? Might be worth investigating if you could get some assistance from Toyota. But expecting coverage before tangible failure of the battery is IMO not realistic.
     
    #11 The Electric Me, Dec 8, 2019
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