2009 Toyota Prius wont start

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Juan Soler, May 18, 2020.

  1. Juan Soler

    Juan Soler New Member

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    20200518_151641_001.jpg 20200518_151713.jpg 20200518_151641_001.jpg 20200518_151713.jpg
    just purchased 2009 Toyota Prius for a quarantine project.
    it was parked for a while. original issue was she was driving and lost power on the highway. while it was sitting the Cat was stolen.
    charged and tested the 12 volt battery its good.
    checked the Traction battery 204. total volts 7 to 7.5 volts per module.
    checked Inverter coolant pump operation verified by turbulent water in the bottle.
    checked all fuses.
    replaced key fob battery.
    reseated all relays.
    MFD does not turn on.
    two presses of start button gives me the first picture i hear relay chatter throughout the car.
    press the brake and the power button and it all shuts down.
     
    #1 Juan Soler, May 18, 2020
    Last edited: May 18, 2020
  2. SFO

    SFO Senior Member

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    Welcome to PriusChat!!

    Did you check the 12v at the jump points under the hood on the drivers side?

    Make sure the battery connections are tight, including the ground strap at the body which can rust.
     
  3. bisco

    bisco cookie crumbler

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    sounds like you have the know how to get tech stream and read the trouble codes
     
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  4. Juan Soler

    Juan Soler New Member

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    i have a code reader but no codes are populating
     
  5. davecook89t

    davecook89t Senior Member

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  6. edthefox5

    edthefox5 Senior Member

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    204 is too low.

    You have a bad hybrid battery.
     
  7. TMR-JWAP

    TMR-JWAP Senior Member

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    Initial thought is the car may not be detecting the brake pedal being pushed.

    Thinking about it again, with your foot off the brake, the first push of the power button should cause the clock, radio and the MFD to power up and the power button led should be green. The second push should make the dash come alive and the led goes orange. You're also showing more warning light than would be normal for the second push (ignition-on position) with no foot on brake.

    If some modules are 7 volts, the HV battery definitely has coded out, which is helping to make ALL the dash warning lights come on.

    Perhaps something else is going on, because if the dash is lit, the MFD should be also. The question is whether its a MFD failure or power supply issue.

    Somewhere in the back of my mind I seem to remember another thread on here with similar symptoms that ended up being a failure of the power source ecu.

    Maybe take a read through this thread and see if your symptoms are similar? There's a troubleshooting guide attachment in one of my posts in that thread that may help.

    2005 prius will not start but 12v battery seems to be working | PriusChat

    Is that 340k on the odo?
     
    #7 TMR-JWAP, May 18, 2020
    Last edited: May 19, 2020
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  8. SFO

    SFO Senior Member

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  9. SFO

    SFO Senior Member

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    Many here use a "mini-vci" cable and a copy of techstream, you can also use an OBD2 blue tooth adapter and Dr Prius, or Hybrid Assistant.

    Use this link to learn about various Bluetooth adapters and what not to buy : Hybrid battery diagnostic and repair tool for Toyota and Lexus
     
  10. Juan Soler

    Juan Soler New Member

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    hey guys i purchased the cable where do i get the software
     
  11. edthefox5

    edthefox5 Senior Member

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    Amazon mini vci
     
  12. SFO

    SFO Senior Member

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    Most sellers will include a CD-ROM or a web link, did the listing mention receiving only the mini-vci or was software also implied?

    This blog is always a great resource, be sure to look at the various tags, like toyota-techstream and mini-vci
     
  13. Juan Soler

    Juan Soler New Member

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    It came with a cd but the cd was damaged during shipping. im awaiting the to send a new cd. but now im sitting here with a laptop and cable. i was wondering if there was a place to download so i dont have to wait the 2 weeks before delivery
     
  14. SFO

    SFO Senior Member

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    Try either/both of the links in the post above.
     
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  15. Juan Soler

    Juan Soler New Member

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    so here is my dilemma i took apart my traction battery to find some cell that were leaking i purchased some from ebay and they are physically different. i searched ans searched and to no avail i cannot find cells that match mine. the bootom one is the ones i have and the top one are the ones i bought from ebay and the only styles i see........ please help.......

    i bench charged the battery by rewiring it to be big 12 volt so my traditional battery charger can charge it on a lighter note i did get it to start... the ICE ran.
     

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  16. Juan Soler

    Juan Soler New Member

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    so upon further research i found out that when the lady had the battery refurbished they put gen 1 battery modules into this 2009 prius. question is do i replace the 6 gen 1 modules or do i try and find a full gen 2 battery set.
     
  17. strawbrad

    strawbrad http://minnesotahybridbatteries.com

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    That's a good way to start a fire.

    Yes, give up on the Gen 1 battery modules.
     
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