The revival of the $300 Prius

Discussion in 'Gen 2 Prius Main Forum' started by Bunce, Jan 25, 2020.

  1. Bunce

    Bunce Active Member

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    I brought home a 2004 Toyota Prius with about 259,000 miles on it. I handed over the princely sum of $300.
    You don't get much for $300 nowadays, but I'm hoping I don't get more than I bargained for.
    So what does a $300 Prius look like?
    Well the paint is it pretty poor shape, as pretty much all of the older ones are, there's a couple of dents and dings. It has new replacement headlights, new tires, the typical Prius rear hatch water leak, which I've already fixed, some mildew and the stench of a wet dog. Oh yeah, I almost forgot, a dashboard displaying a big red triangle.
    [​IMG]
    There will be some affiliated Amazon links when describing what I used for repairs etc.
    Living in the PNW, the first thing that had to be done was to fix the leaks that appear at the rear end of the roof gutters, under the trim. To do so, I cleaned it out thoroughly with soap and water and then a toothbrush and isopropyl alcohol. If you inspect closely there is panel sealant that runs down from the roof line to about below where the hatch struts are bolted in. That's what dries and with the hatch opening and closing umpteen times, cracks. So I cleaned thoroughly all the way down to the struts. I then applied this https://amzn.to/2NSjkz5 "flowable windshield silicon" so that it really gets into the cracks and seals it up. The cracks look small but let in a surprising amount of water. In my other Prius the trunk was almost full of water.

    If you haven't yet downloaded Hybrid Automotive app for your phone or tabet, you should. It's been an indispensable tool in the repair and monitoring of my other Prius. Paired up with this bluetooth dongle https://amzn.to/2sZuU4e, it enables you to gather lots of helpful data.

    Tomorrow a new harness arrives from Hybrid Automotive, as soon as I get it installed I'll start the Prolong battery reconditioning. I have 1 cell that's not playing nice and thought I'd take a long shot and see if I can avoid having to rebuild the battery. It probably won't work but I'll never know if I don't try.

    Progress to follow......
     
  2. JayRock_PHX

    JayRock_PHX Member

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    Still $300 is great price. Can’t even find a wrecked one for that which junkyards buy to part out.
     
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  3. PriusCamper

    PriusCamper Senior Member

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    Wow... Congratulations! I'd be so happy to score a spare Prius for $300. It'd probably bring me to near tears... Keep us updated with lots of details and questions, parts search.... And my vote for most reliable used modules:www.2ndlifebattery.com or under same name on ebay --> east of Cascades outside of Bend, OR. He's part of the Hybrid automotive program at Central Oregon Community College...
     
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  4. Priuslover09

    Priuslover09 Member

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    Same
     
  5. Bunce

    Bunce Active Member

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    The Hybrid Automotive, HA, harness arrived today. So I wired it up, cleaned out the fan with a dry toothbrush and a small can of compress air.
    Then on the charger it goes.

    Starting at about 15:00, 1.25.2020 with 227 volts
    I just checked it at 18:00 and it has 242 volts.

    If it gets to 244v before bedtime, about 10.30, I'll pop it on the discharger for an overnight shift.
     

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  6. Bunce

    Bunce Active Member

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    Oh yeah, I left the car in pieces, just in case the reconditioning doesn't work and I have to remove the battery for module replacement. And I've just spent the last couple of hours shampooing and scrubbing anything soft that I removed. Hours and hours more of that to do. Stinky dog and a few patches of mildew will be the end of my back.
     
  7. Priuslover09

    Priuslover09 Member

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    But
    Let charge it over the day
     
    #7 Priuslover09, Jan 25, 2020
    Last edited: Jan 25, 2020
  8. mjoo

    mjoo Senior Member

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    I would let it charge for 12 hours after getting to 244-246V. Then put it on the highest discharge setting.

    Pixel XL ?
     
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  9. Priuslover09

    Priuslover09 Member

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    Maybe the cooling fan
     
  10. Bunce

    Bunce Active Member

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    Is it not the discharging that brings the weaker cells back to life?
     
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  11. PriusCamper

    PriusCamper Senior Member

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    The only problem with leaving the car in pieces, particularly the right side panel is that it's connected to the cooling fan intake cover and one time I had a huge moth fly in and rattled around something fierce:
     

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  12. Priuslover09

    Priuslover09 Member

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    You need the hybrid replaced

    That’s what I thought

    I think it could be more of the cells failing

    But maybe you should just the cells first

    Then the cooling fan
     
    #12 Priuslover09, Jan 25, 2020
    Last edited by a moderator: Jan 29, 2020
  13. PriusCamper

    PriusCamper Senior Member

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    Yes if a cell is has failed, but not if it's weak, in which case three rounds of increasingly deeper discharges and recharges breaks up the poorly conducting larger crystals and boost capacity from as low as 50% up to 96% Learn more here: BU-807: How to Restore Nickel-based Batteries – Battery University
     
  14. Bunce

    Bunce Active Member

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    Poor little fella. All the doors and windows are closed so it shouldn't be a problem.
     
  15. mjoo

    mjoo Senior Member

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    Yes but if you read the directions on the website - you need that amount of time to balance the cells. Balance them before discharging them or the weak cells will break.

    Pixel XL ?
     
    #15 mjoo, Jan 25, 2020
    Last edited: Jan 25, 2020
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  16. Priuslover09

    Priuslover09 Member

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    Really?
     
  17. Priuslover09

    Priuslover09 Member

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    All the cells need to be 17v to be balanced
     
  18. PriusCamper

    PriusCamper Senior Member

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    Yea, I'm sure the moth was like wow, this seems like an interesting place to explore now that the sun is coming up...

    In the winter in Michigan that's probably ok... In the Summer it wouldn't be...
     
    #18 PriusCamper, Jan 25, 2020
    Last edited by a moderator: Jan 28, 2020
  19. Bunce

    Bunce Active Member

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    That would put it at 476v, that doesn't sound right me ole boy.
     
  20. PriusCamper

    PriusCamper Senior Member

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    There are 6 cells in each module (roughly 1.3v per cell)
    There are 28 modules in most Prius packs (roughly 8.2v per module)
    There are 14 blocks made of 2 modules for each voltage sensor (roughly 17v per block)
     
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