2005 with single red triangle occurrence but running normally now, no codes. New HV battery (dorman

Discussion in 'Gen 2 Prius Main Forum' started by James1964, Sep 11, 2018.

  1. James1964

    James1964 Member

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    2005 with single red triangle occurrence but running normally now, no codes. New HV battery (dorman). Getting 49mpg, daily driving. Ideas? Watch outs?
     
  2. PriusCamper

    PriusCamper Senior Member

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    There's sub codes, that most error code readers are unable to read... Make sure your 12 volt battery is healthy, 'because that can create all kind of crazy if it's 12v needs to be replaced. You can get a mechanic with Toyota techstream software to read subcodes, or use the Dr. Prius app on your phone via an OBD2 Bluetooth code reader. To figure out which OBD2 reader to buy you can go here: priusapp.com/obd I prefer Veepeak, which is a high quality super fast reader.

    Main concern is that if you drive your car around with an error code/red triangle and ignore it you could cause way more costly damage to your car than if you deal with it right away.
     
  3. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    Exactly.

    There are codes stored, historical codes even if the light isn't on any more. If your reader can't read them, you need a better reader/software combo.

    It could really be anything. Door ajar, O2 sensor problem, catastrophic failure of some kind, you don't know. And until you know, you shouldn't drive it. Once you know what it actually is, then you can determine if you can keep driving it.
     
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  4. PriusCamper

    PriusCamper Senior Member

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    A paradox: I always want to say never drive your car when there's an error code/warning light... At same time... The urge to get home without calling for a tow is real... The severe damage you can cause doing that is also very real. As much as I want to preach never ever drive a car when an error code is logged, even if your diagnostics on hand can't read it, I've had an error code or two that I tried to rationalize and just going for it an avoiding the hassle of unnecessary towing.

    Or craziest of all was a call from a concerned mom who's daughter was given family's Gen 1 Prius when she went off to college and red triangle showed up... And well, let's just say it's been way more than a year and her daughter has been driving for thousands of miles ignoring it and I'm like "maybe get the error code read and cleared?" Guess that was too much to ask... Never heard from 'em again...

    Perhaps someday in the future we'll be better equipped to help people in this regard? Thus far all our online interconnections and real time info is not yet enough to deal with this paradox... But perhaps soon?
     
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  5. JC91006

    JC91006 Senior Member

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    Single triangle usually are

    1 low oil
    2 low coolant
    3 inverter coolant pump failure
     
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  6. ericbecky

    ericbecky Hybrid Battery Hero

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    With and aging car and a replacement battery, I suggest you get a way to read error codes and data from the car.
    Cost you less than $75 total for these 3 items
    Android phone/tablet
    Elm 327 Bluetooth Obdii adaptor
    Torque Pro app

    This will let you read and clear codes as well as see hybrid battery data live.
     
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  7. PriusCamper

    PriusCamper Senior Member

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    Yes, but be careful with which OBD2 adapter you buy, the cheaper ones that don't work aren't much different in price than the ones that work really well... I had to buy 3 on Ebay and return them before I got a Veepeak that worked well. As always learn more about this here: priusapp.com/obd
     
  8. James1964

    James1964 Member

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    Thanks mate! Much appreciate the helpful advice.
     
  9. James1964

    James1964 Member

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    did all three. thanks. all better now.
     
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  10. bisco

    bisco cookie crumbler

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    amazing, well done!(y)
     
  11. James1964

    James1964 Member

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    I used both torque and dr prius apps. Both reported HV @ 100%. My son is a new owner and there's definitely a curve of learning to these great cars!

    Posted via the PriusChat mobile app.
     
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  12. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    100% what?
     
  13. James1964

    James1964 Member

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    Good question. Dr Prius app had me go through a hard acceleration/hard brake test as well as their auto diagnosis repetoire and the result of those tests was that the HV battery was functioning at 100% capacity. People say that app is good so with a grain of salt, it's good news.
     
  14. PriusCamper

    PriusCamper Senior Member

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    For a small fee the app also lets you print out a certificate based on their tests(s)... Could come in handy if you're selling your car and want to entice the next buyer a bit. It's a good idea. Haven't done the tests yet, so don't know how valid they are yet.
     
  15. James1964

    James1964 Member

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    Yes, I paid 8.95 for the deeper HV test and saved that certificate. Many reports that DP is a legit diagnostic tool. I'm not selling DP mugs BTW.

    Posted via the PriusChat mobile app.
     
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  16. PriusCamper

    PriusCamper Senior Member

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    I suspects the more diagnostic tools you use, the better.... Especially if you're getting ready to sell.
     
  17. James1964

    James1964 Member

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    We only recently purchased this one and my son is using it commercially so trying to use all these fantastic resources on PC, like you, in favor of this car going well for him. So far very good. It's improved even.

    Posted via the PriusChat mobile app.
     
  18. ericbecky

    ericbecky Hybrid Battery Hero

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    100%? That makes me laugh.
    Why would a used battery be 100%?
    The test is quite easy to manipulate.
    So yeah, take it with a grain of salt.
     
    #18 ericbecky, Sep 18, 2018
    Last edited: Sep 18, 2018
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  19. James1964

    James1964 Member

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    'Caveat emptor' are wise words. Seems to me that once you hook a battery up, it''s used. It's a nice vehicle and from many PC reports, highly reliable. Hopefully that's how the story goes for us.

    Posted via the PriusChat mobile app.
     
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