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Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by mchlmrtz, Jan 28, 2009.

  1. mchlmrtz

    mchlmrtz New Member

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    Hey everyone. I have a 2005 Prius and haven't had any problems with it until this morning. My wife was on her way to work and a bunch of warning icons popped up. Any idea what might have happened? Everything was fine when I parked the car last night. My wife said that she had to get off the freeway because the gas engine shut off.

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  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    I suggest that you immediately visit your Toyota dealer so that the DTC (diagnostic trouble codes) can be retrieved. Has your car had the latest firmware updates downloaded for the engine and hybrid vehicle ECUs?

    If those ECUs are up to date, another popular failure mode is that the inverter cooling pump fails. This causes the DC to DC converter to shut down and the hybrid system warning icon to turn on. When the 12V bus voltage drops down, then various brake warning lights will appear.
     
  3. mchlmrtz

    mchlmrtz New Member

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    Thanks Patrick. I hope it's nothing too serious. We've only got 43,000 miles on the Prius so far. I'll be taking it in first thing in the morning
     
  4. CharlesJ

    CharlesJ Member

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    Of course you will let us know what happened, what they found, right? :D
     
  5. firepa63

    firepa63 Former Prius Owner

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    It's quite possible that your 12v battery is on it's last legs. A low 12v will display some strange things at times.
     
  6. mchlmrtz

    mchlmrtz New Member

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    Well. It's sitting at the dealership right now. I had to have it towed tonight after my Wife tried to drive it home after work. She only made it about a mile. After you press the power button, the engine would turn on and shut right back off. I'll know more in the morning when I call the service department up.
     
  7. mchlmrtz

    mchlmrtz New Member

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    I hope that's all it is.
     
  8. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Thanks for the update. If the car was sitting around all day, then had a problem after driving only one mile, then a failed inverter coolant pump is probably not the issue. I don't think the 12V battery is the problem either, if the car could be started and subsequently shut down by itself.

    I'm very interested to hear what your service writer has to say about your car. Please ask what the DTC are, and post.
     
  9. mchlmrtz

    mchlmrtz New Member

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    I am still waiting to hear from the dealer. I should have been a little more clear on the issue. My wife started having problems half way to work yesterday. The warning lights came on and the gas engine shut down. She made it to work though. After work, she made it about a mile and couldn't go any further. When I drove out to her, I tried starting the car. Everything turned on, the gas engine came to life for about 3 seconds then shut down. everything else was still on though. I just couldn't move the car. I think the main battery had drained also. I'll update everyone as soon as I can.
     
  10. Patrick Wong

    Patrick Wong DIY Enthusiast

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    This sounds like your car had run out of fuel, but I see that the fuel gauge reads full.

    I am wondering if your fuel pump has a problem, or maybe the fuse or relay feeding 12V power to that pump failed.
     
  11. mchlmrtz

    mchlmrtz New Member

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    Patrick. I like your ideas. Keep it cheap for me. :) Still waiting to hear from the dealership. They sure like to take forever to call.
     
  12. Priusaurus110

    Priusaurus110 Junior Member

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    Just one other word of caution for future reference: trying to drive extended distances on traction battery alone can lead to bigger problems. Best action when the ICE cuts out is to use battery power only to safely exit the highway to a spot where you can call for a tow.

    Good luck with the fix. I'm curious to hear the outcome. I had same lights and same symptoms about 2 years ago on my 2005. Technician said a stability contol systme error code popped up but he couldn't isolate a specific cause. Code was cleared and I haven't had any problems since but it was certainly disconcerting to lose the engine at 35 mph on the road! Of course there are numerous problems that can lead to the malfunction lights that you got so getting the exact code is critical...
     
  13. mchlmrtz

    mchlmrtz New Member

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    Ok. I just got off the phone with the service guy. They have to keep the car overnight because they want to run tests on in first thing in the morning while it's cold. He mentioned something about some kind of coils they're looking at. I forget what he called them, but it's like the old spark plug cables. Whatever they're called now. he did say they were able to drive it around, so they must have gotten the engine to stay on. I'll have more info tomorrow morning.
     
  14. mchlmrtz

    mchlmrtz New Member

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    I just remembered what the service guys said. He was talking about the coil packs. Right now, they suspect them but want to run more tests in the morning.
     
  15. mchlmrtz

    mchlmrtz New Member

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    Update time!
    Just got off the phone with the service dept. It was the ignition coil. Of course, since they never had to replace one before, they don't have any in stock. I'm without my Prius for one more day. The good news is that it's under warranty, so no cost for me. WOOOHOO!!
    I'll ask a few questions tomorrow when I pick it up. I really want to know what made it fail.
     
  16. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Thanks for the update. Prius has four spark igniters; one for each cylinder. It is possible for water to enter a spark plug well and cause corrosion and damage to the igniter, as rain water can drip down from the cowl to the engine valve cover. This will also cause DTC P030x, where x is the affected cylinder number from 1 to 4.
     
  17. Mike Dimmick

    Mike Dimmick Active Member

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    I suspect then that 'running' for 3 seconds after switching on was actually the car trying and failing to start the engine. Because it spins the engine up to normal idle speed before applying fuel and spark, starting sounds like running.
     
  18. mchlmrtz

    mchlmrtz New Member

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    Just got home and the Prius is alive again! The hybrid battery was pretty drained, but was recharged by the time I got home. Thank goodness the Ignition Coil was under warranty. It would have been a $500 job. Here's a list of the codes that came up:

    P0351
    P0352
    P0354

    The dealership said my car was the first time they've done this type of repair.
     
  19. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Thanks for your update, I haven't seen anyone post with the P035x codes before. This happens when the ECM (engine ECU) does not receive the IGF (ignition confirmation) signal from the spark igniters (aka ignition coils).

    Please look at your repair invoice and post the part numbers, descriptions, and quantities that were replaced. Thanks again!
     
  20. mchlmrtz

    mchlmrtz New Member

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    Looks like they replaced all 4 coil packs.

    4: 90919-02240 Coil, Ignition