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Big Red Triangle

Discussion in 'Gen 2 Prius Main Forum' started by johnjohnchu, Jul 12, 2016.

  1. johnjohnchu

    johnjohnchu Active Member

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    My car (2006 Prius with 250k miles) was operating normally all day today. Still getting very good mileage around 52 mpg on average. Then abruptly, the big red triangle and few other yellow warning lights (check engine, VSC, and an indicator with exclamation mark in the middle) showed up while the car was moving around 20 mph. Now, the car does not have much power and it was very difficult to speed up or going uphill. Turned the engine off and then back on. The symptoms still persist. The battery indicator was at only 1 bar. Let the engine run for a while and the battery indicator went to 3 or 4 bars. Turned the car off and then back on, the battery indicator went back to 1 bar immediately. Also the battery fan was running at high speed, even through I have just started driving for about 5 minutes. Will do the following tomorrow: (1) check 12v battery, (2) use Torque SW to see if HV battery has proper values, and (3) read diagnostic codes. Please help. All suggestions are welcome.
     
  2. M in KC

    M in KC Active Member

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    Those are good starting points, report back when you have more data. But the quick cycling of the HV battery's SOC would suggest it is at the end of its service life. But more on that after you pull the codes.
     
  3. fotomoto

    fotomoto Senior Member

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  4. johnjohnchu

    johnjohnchu Active Member

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    Here are the codes: POA80, P3016, and P3017. Most of the module pairs have resistance of .021 to .023, except module pair 5 has resistance of .028 Ohms. Voltages of all module pairs are 17.0v. Checked 12v battery which is fine.
     
    #4 johnjohnchu, Jul 12, 2016
    Last edited: Jul 13, 2016
  5. M in KC

    M in KC Active Member

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    POA80 is the replace HV battery code. P3016 and I believe P3017 indicate bad HV battery modules, P3016 for sure a bad HV module. Looks like it's time to rebuild, buy remanned or buy a new HV battery.
     
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  6. jeff652

    jeff652 Senior Member

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    Maybe a long shot but it the battery still under warranty?

    If not and you want to recondition the pack yourself for a fraction of the cost of battery replacement, it can be done pretty easily in a few days with our Prolong Battery Reconditioning Package:
    Prolong Battery Systems FAQ - Hybrid Automotive

    Feel free to call us at 800-589-0730 if you'd like more info
    :)
     
  7. johnjohnchu

    johnjohnchu Active Member

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    Did not like the HV battery failure mode last night, which gave no warning prior to failure, except that I know the battery is 10 yrs old. Drove the car in limp mode for about 20 miles to Longo Toyota dealer for HV battery replacement. It is going to cost $3522 which includes the replacement battery G9510-47031, 5 hrs of labor, and tax.
     
  8. lifehouse

    lifehouse Junior Member

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    Ouch for the price. Hope they will clear all codes. Update us
     
  9. M in KC

    M in KC Active Member

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    Thanks about the going rate is you go the dealership route, but it will be a one and done deal.
     
  10. fotomoto

    fotomoto Senior Member

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    Did they mention warranty?
     
  11. johnjohnchu

    johnjohnchu Active Member

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    Final cost is $3447.19 w/ one year warranty. The dealer also offered further $300 reduction for a (Toyota?) reman battery, but I declined. Perhaps my MPG, especially city driving, may now improve slightly with the new battery.
     
  12. JC91006

    JC91006 Senior Member

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    The warranty is actually 3 years when installed by dealer. You've almost spent the same amount on the battery than what the car is worth with 250k miles
     
  13. johnjohnchu

    johnjohnchu Active Member

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    I have asked two dealer personnel from two different dealers, both quoted 1 yr warranty. Is the replacement HV battery warranty info online somewhere? Indeed, it is a lot of money for a 10 yr old 255k miles car. However, my car is currently in excellent condition without any other issue whatsoever.
     
  14. JC91006

    JC91006 Senior Member

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    You can call Toyota corporate if you need to verify the warranty period, but I don't think you'll need it for the next few years of service.

    As I understand it, the reman Toyota battery is a new battery with an old painted battery case, worth while for $300 savings.

    Hope you took advantage of longo coupons and 10% aaa discount
     
  15. johnjohnchu

    johnjohnchu Active Member

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    Did not know anything about the Longo coupons and AAA discount. Got 15% discount on the battery listed price with some other minor $50 cost reductions. After all that, the total cost basically independently matches the quoted cost of $3449.65 from Toyota of Hollywood.
     
    #15 johnjohnchu, Jul 14, 2016
    Last edited: Jul 14, 2016
  16. Rph74

    Rph74 Active Member

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    Wow, no warning at all prior to failure? Was your battery showing some signs of weakness, such as fluctuating from 6-7 bars down to 2 bars and back fairly quickly? Lastly, how fast (or slow) is the Prius able to drive in limp mode?
    As for warranty, the 1 year is correct. That being said, at least you can rest assured that your battery should last another 10 years. This thread makes me feel better about my decision to preventatively replace my battery. I drive my car frequently on long trips, and your scenario is precisely what I was trying to avoid. Sorry you had to go through it, but glad you have another 10 years with your Prius if you so choose!
     
  17. fotomoto

    fotomoto Senior Member

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    Mine didn't give major warnings either but letting it sit with little use for several days (SKS aslo ran down the 12v) was the straw that broke the camels back.
     
  18. Rph74

    Rph74 Active Member

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    I noticed you sig says you own a 2006, but have sold a 2010 Prius. Any reasons you kept the older one?
     
  19. fotomoto

    fotomoto Senior Member

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    I recently bought the '06 with only 45k miles for my kid's first car.(y)
     
    #19 fotomoto, Jul 15, 2016
    Last edited: Jul 15, 2016
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  20. johnjohnchu

    johnjohnchu Active Member

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    There was no warning sign to me at the time probably due to the fact that the HV battery deterioration was very gradual over the 10 year period. The state of charge bars were never fluctuating quickly. I was still getting around 53 MPG.

    When the big red triangle abruptly showed up, I could only drive about 20 MPH max on a flat road, and was having great difficultly even on very slightly inclined roads that you might not have even noticed during a normal driving. However, I did have to climb a very short steep hill at around 5 MPH.

    After the repair, I do notice some differences. The state of charge bars tend to stay in the middle blue section a lot more consistently. The engine does not come on as often as it did especially during the city driving.
     
    #20 johnjohnchu, Jul 15, 2016
    Last edited: Jul 15, 2016
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