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Does your Prius give you some warnings in advance,that the HV BATTERY will fail soon?

Discussion in 'Gen 2 Prius Main Forum' started by ski.dive, May 7, 2017.

  1. ski.dive

    ski.dive Active Member

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    2008 Prius
    Does your Prius give you some warnings in advance, that the HV BATTERY will fail soon?
    Please post some of the Pre-Symptom warnings of future HV baterry failure?
     
    #1 ski.dive, May 7, 2017
  2. Rmay635703

    Rmay635703 Senior Member

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    Decreasing / poor FE
    Decreasing acceleration/ regen
    Car running when it shouldn't / charge mode engine racing at a stop when unexpected

    Subjective I know not sure if I missed any
     
    #2 Rmay635703, May 7, 2017
    fotomoto likes this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    The traction battery SOC gauge shows very rapid changes and easily gets up to 8 green bars.
     
    #3 Patrick Wong, May 7, 2017
    M in KC and fotomoto like this.
  4. 'LectroFuel

    'LectroFuel Senior Member

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    I replaced my HV battery last week. Here is what I noticed:
    1.) I noticed a week before it died that the accelerator response was lethargic like a golf cart and the battery went to one purple bar which never happens.
    2.) The battery quickly fills and drains when sitting still or going down a small hill.
    3.) The car was very slow.
    4.) The engine works very hard.
    5.) Little EV power. The engine was on more often than not.
     
    #4 'LectroFuel, May 8, 2017
    ATONESIR likes this.
  5. andrewclaus

    andrewclaus Active Member

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    The battery cooling fan (grille in the back seat) may audibly run more frequently.
     
    #5 andrewclaus, May 9, 2017
  6. 'LectroFuel

    'LectroFuel Senior Member

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    My battery fan didn't make a noise and where I live it's 70ºF–85ºF. But all cars' symptoms are different. You might still have a lot of battery power and one day it'll just fail.
     
    #6 'LectroFuel, May 11, 2017
  7. ATONESIR

    ATONESIR Junior Member

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    all of these things. and I got my first triangle today and its getting replace with a green beans. not my preference, but i thought new prius batteries would have more available stock by now. I would have went without the car for over a week to get one of those batteries, but not 2 months.

     
    #7 ATONESIR, Aug 29, 2018
    bisco likes this.
  8. bisco

    bisco cookie crumbler

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    that is ridiculous.
     
    #8 bisco, Aug 29, 2018
  9. Raytheeagle

    Raytheeagle Senior Member

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    Where in the US of A are you located?

    Maybe with a location we could recommend some options before you invest in a battery that won’t be as reliable as you hoped;).

    Good luck with your decision (y).
     
    #9 Raytheeagle, Aug 29, 2018
    Last edited: Aug 30, 2018
  10. Rph74

    Rph74 Active Member

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    Agreed, it would be well worth the wait for a new OEM battery.
     
    #10 Rph74, Aug 30, 2018
  11. C Rider

    C Rider New Member

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    Vehicle:
    2006 Prius
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    I bought my 2006 with a bad HV battery. I drove it 25 miles with the triangle on. I noticed the ICE ran a lot and the battery would show full charge very quickly, and then discharge very quicly. The battery cooling fan was running loud and the engine was racing by the time I pulled into my driveway. Now that I have a new HV battery I have only noticed the battery completely charged a handful of times.
     
    #11 C Rider, Sep 1, 2018
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