Restore dead Prius

Discussion in 'Gen 2 Prius Technical Discussion' started by JohnStef, Sep 30, 2016.

  1. JohnStef

    JohnStef Member

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    Hello
    I am buying a 2005 Prius with 298k miles, it does not run because the main battery is dead. I am looking for a list of things that need to be done to bring this back.
    As far as I know it runs fine, the owner left it set for 6 months and no start. The dealership told him it was the main battery. I have a used functioning battery, what else do I need?
    Thank you,
     
  2. Manhal K Alrashdan

    Manhal K Alrashdan Junior Member

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    You need to replace the 12V battery , change oil and filter , perhaps also the spark plugs.

    Posted via the PriusChat mobile app.
     
  3. bisco

    bisco cookie crumbler

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    welcome! it's hard to say until you put the functioning battery in and try to power it up. if anything else is wrong, you will get trouble codes.
    if you're going to tackle a project car, you should probably get toyota tech stream software and service manual on line membership.
     
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  4. 69shovlhed

    69shovlhed Surly tree hugger

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    I bet it could use new trans fluid too.
     
  5. JohnStef

    JohnStef Member

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    Will $16 ebay cables work?
     
  6. Eastside

    Eastside Member

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    Lansing Craigslist has much better deals available. imo
     
  7. bisco

    bisco cookie crumbler

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    search the mini vci threads here for experienced info, i don't have one.
     
  8. JC91006

    JC91006 Senior Member

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    Unless you get the car for $500, it probably won't be worth it to fix. 298k is a dice roll gamble
     
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  9. JohnStef

    JohnStef Member

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    Thank you for your replies above.
    The deal has been stalled but is moving forward now.
    Can the codes be read by powering up the car with just a 12v battery?
     
  10. Bill the Engineer

    Bill the Engineer Senior Member

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    Codes may not be in memory if it has had a dead 12v for a long time. Just saying...
     
  11. Frontporch

    Frontporch Junior Member

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    I just picked up a prius recently that was diagnosed with a bad transmission. The triangle was illuminated, but I could not get any codes with my torque application. How do you pull these types of codes? Is there a way to get at them in the multi function display?
     
  12. fotomoto

    fotomoto Senior Member

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    Search "Prius mini VCI techstream laptop".
     
  13. JohnStef

    JohnStef Member

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    FrontPorch did you pick up that 2007 from a dealer in NJ? I saw one on the internet and was interested, for the price and options it looked like a good deal. But they didn't state what issues it had.
     
  14. Frontporch

    Frontporch Junior Member

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    I bought the car from a private party in PA. You can look up all the previous service history using toyota owner's site. All you need is a VIN. I was able to look up the car before I went to see it and uncovered that the first owner brought it in to the dealer running poorly and the tech's drained the transmission, saw there was metal in it, suggested a replacement unit, and the owner refused. Second owner bought the car not knowing the history (carfax didn't show it). After 40K more miles it quit. Owner had the code read by a mechanic and shared that info with me.
     
  15. JohnStef

    JohnStef Member

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    OK interesting. You up for a trans swap? Do you have one?
     
  16. JohnStef

    JohnStef Member

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    FP I used the Torque app today on a Prius, I had to make a new vehicle, I named it "prius" and it worked.
     
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  17. Frontporch

    Frontporch Junior Member

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    Already completed the swap. Was involved, but doable. Found good resources here on priuschat and an online workshop manual. Had all the info I needed. Used transaxles were inexpensive. I guess the trans failure rate isn't too high. Might be more common for those that don't change the fluid enough.
     
  18. JohnStef

    JohnStef Member

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    Congratulations. Locally where is 2007 transmission available for 150. If you didn't have one available I would help you out
     
  19. Frontporch

    Frontporch Junior Member

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    Thanks. I suggest when you determine you need one you call a bunch of local scrap yards. I think for a big job like this you should look for one without too many miles. No sense doing it twice. Good luck with your Prius.
     
  20. The Electric Me

    The Electric Me Go Speed Go!

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    Can I play the role of Captain Obvious?
    But a Prius with nearly 300,000 miles being obtained with a dead HV Battery, without access to codes or even an engine start up, is a "All-In" project situation.

    If you are looking at that situation and saying..."What do I need to do?, What Else do I need?"...

    I'm trepidatious about the whole endevour.

    I wouldn't approach this type of situation unless I assumed I might need anything and everything, and I WANTED a project that could end up being that level of scope.

    With 300,000 miles this is restoration not rescue. And it could be a significant level of restoration.

    Some people WANT a project, and it certainly can be a valid and worthwhile hobby and approach. Revelation might reveal not as much is needed as one might expect. BUT I don't think you approach this opportunity thinking it's just a matter of a few things being needed.

    Step One. Get the vehicle started.
     
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