red triangle with tpms

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by maxentkhan, Sep 15, 2019.

  1. maxentkhan

    maxentkhan New Member

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    my prius 2005 give problem it show red triangle with tpms sign and when it stop after theat it show all sigb on and wont start up i change 12 volts battery and i change new invertor coolang pump still it as same problem and it wont show any codes through scanner in diagnostic mod batter show 12.4 volts and in accessory mod coolant pump work fine i bleeding also but it still has the same problem any body help me
     
  2. bisco

    bisco cookie crumbler

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    welcome!
    12.4 is low for a new battery. put a charge on it, and it should hold close to 13 volts.

    if that doesn't fix it, you'll likely need tech stream
     
  3. JC91006

    JC91006 Senior Member

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    Tpms is not a related non start issue.

    Other than red triangle, what other lights are on?

    Did you mess with the Orange interlock on the hv battery?
     
  4. maxentkhan

    maxentkhan New Member

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    when was driving red triangle came with tpms light and when i put on park its whos check engine abs and tpms lights on i change the 12 volt battery and drive it about 20 miles again same red triangle and tmps light on like before and put park it shows all lights on and wont on drive mod and it let me only on nuetural mod and not ready lights on and it wont start up also one time i pull out orange interlock to reset after put new 12 volts battery but i put back orange lock right it suppose t
     
  5. JC91006

    JC91006 Senior Member

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    I think there is a lot of misinformation here about replacing your 12v battery, I'm not sure why so many do it to fix a problem. It doesn't fix your problem but makes it worse when the codes reset/erase after you change the 12v.

    Now that you've got the triangle again, read the codes and see where it points you. If the triangle is on, there are codes stored
     
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  6. maxentkhan

    maxentkhan New Member

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    its dosnt change any thing after changing the new 12 volts battery it gave same problem while driving start redtriangle with tpms and after park it wont start up shows all with red triangle i just also change invertor coolant pump its dosnt change problem i dont know whats going wrong
     
  7. bisco

    bisco cookie crumbler

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    check you tube on how to complete the interlock properly
     
  8. maxentkhan

    maxentkhan New Member

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    interlock is perfectly correct connected these all symptoms are same as before i change 12 volts battery
     
  9. dolj

    dolj Senior Member

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    That might be true, but a Prius with no problems will start on a battery all the way down to ~10.5 V.
    Because it is the first thing that people respond to just about any post here, just like bisco above did.
     
  10. bisco

    bisco cookie crumbler

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    because those of us who have been around awhile remember the threads by very knowledgable members who advised to always start with 12v health

    maybe toyota has changed things since then:rolleyes:
     
  11. TMR-JWAP

    TMR-JWAP Senior Member

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    On a side note....all the (Toyota issued) technical manuals I have for the Gen 2, in the troubleshooting guides, they almost always have you verify the 12v system early in the procedure. I believe they spec 11-14v as being ok to continue, and as @dolj mentioned, I've surprisingly seen voltages slightly lower than that with no outward appearance of a problem. I think it was around 10.2 or 10.3? that I saw a flashing dash that had squares around the shift symbols. Flashing dash cleared up after a charge.
     
  12. maxentkhan

    maxentkhan New Member

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    so whats wrong with that shit car i now show any code through scanner just while driving show red triangle and tpms sing after park it wont start up thats why peoples say prius is most hated car
     
  13. bisco

    bisco cookie crumbler

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    will all batteries measuring 10.5 volts static, drop the same amount under the same load?
     
  14. TMR-JWAP

    TMR-JWAP Senior Member

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    Max,

    Anytime the red triangle appears, there IS a code stored (except if it appears due to low oil...have you checked your dipstick lately?)

    If your code reader isn't showing a code, its a code reader problem, not a Prius problem. Not all code readers are hybrid friendly. Most members here, who are DIY types, have copies of Toyota Techstream. Others have various apps on their phones that are prius friendly.

    Are you able to post a photo of your dash when the lights are on? TPMS and the RTOD should not be inter-related.
     
  15. TMR-JWAP

    TMR-JWAP Senior Member

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    Just like any other battery, voltage is not always a reliable indicator of capacity. One of the reasons I was very surprised the first time I saw those values in the Toyota manuals. I would have to look again to see what systems they require to be turned on at the time of the voltage check.
     
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  16. dolj

    dolj Senior Member

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    Toyota have not changed anything, it is is the poor interpretation, sometimes aided by "Chinese whispers", that is the problem.

    It is not the issue of whether or not to check the battery health – that is a given, it is the arbitrary advice handed out infinitum to replace a battery that is not causing the problem or creating the impression a battery with less that 12.4 V is bad.

    The criteria Toyota uses varies depending on what is being tested. The 12 V bus minimum requirement could be > 8 V; > 9.5 V; 10 – 14 V; > 11 V or 11 – 14V.

    Other than, it is a good idea to charge a 12 V battery that has a static voltage less than 12.4 V, because that is good for the battery, it is not likely to have any bearing on any problem with which a poster is dealing, until such time the lower threshold reaches a level which the repair manual indicates it to be problematic.
     
    #16 dolj, Sep 17, 2019
    Last edited: Sep 17, 2019
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  17. TMR-JWAP

    TMR-JWAP Senior Member

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    The bold area just caught my attention. This situation of NOT STARTING again after being shut off is typically indicative of error code P0AA6 - Hybrid Battery Voltage System Isolation Fault.

    It IS the only fault listed in the tech manual as preventing a restart to "ready" once the car is shut down.

    Frequently caused by electrolyte leakage on an older HV battery, but could also be caused by any damage to the HV cables, water in HV connections in the engine compartment, a failing transaxle, etc. A proper diagnostic tool will read the code (and it's subcode to help provide further location information).
     
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  18. Texas Hybrid Batteries

    Texas Hybrid Batteries Active Member

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    2005’s don’t have tpms lights. Wasn’t even an option back then.
     
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  19. TMR-JWAP

    TMR-JWAP Senior Member

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    Good catch on the year/tpms thing. I was thinking his "tpms" is probably the brake lamp. That seems to coincide more with the RTOD and makes more sense
     
  20. maxentkhan

    maxentkhan New Member

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    yes you right i took car to toyota dealer shop they grab code p0AA6 NS p3009 they say tranxale need to replace cost 4000 for new tranxale its lot money to spend on this car
     
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