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Reviving 08

Discussion in 'Gen 2 Prius Technical Discussion' started by mntex, May 5, 2024.

  1. mntex

    mntex New Member

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    I am trying to revive an 08 Prius, that was given to me. The car was parked for about 4 years because my understanding the battery was bad. Things I have done include, removed most of the gasoline and added new 5 gallons , new 12 v battery and reconditioned the HV battery to about 119 volts On the last photo what those this symbol represent? The arrows in a c shape I believe. Also those the park light need to light up, when pushed the bottom it did not light up. Would the code Po102 keep it from starting?
    . IMG_3290.jpeg IMG_3289.jpeg IMG_3288.jpeg IMG_3286.jpeg IMG_3283.jpeg IMG_3285.jpeg IMG_3284.jpeg IMG_3282.jpeg
     
  2. mntex

    mntex New Member

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    What does this symbol mean?
     

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  3. Tombukt2

    Tombukt2 Senior Member

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    I don't think it means anything You see you don't have a speedometer or any of that in the display seems like the CM monitor display is bad I don't know why you're just getting those funny circles
     
  4. pasadena_commut

    pasadena_commut Senior Member

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    119V sounds like it is probably too low to be useful. Fully charged it is just below 202V (according to wikipedia.) Examine the discharge curve for the NiMH chemistry and draw your own conclusions about the state of charge of that 119V pack.

    If the pack was bad four years ago it is still going to be bad today. If you buy an OEM replacement pack the modules will come fully, or at least adequately, charged. Assuming the pack issue wasn't in the electronics section then installing that new OEM would let you start the motor. A bit of a risky investment if you don't know what other problems the car might have.
     
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  5. bisco

    bisco cookie crumbler

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    How are you reconditioning the battery?
     
  6. mntex

    mntex New Member

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    Used a hobby charger and the voltage was 219 not 119 my mistake. Will look into replacing the map and go from there.
     
  7. mr_guy_mann

    mr_guy_mann Senior Member

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    How much do you really want to fix this car?

    Top of the list is the high voltage battery - it's "dead". 119V is very dead. Should be around 210V. I would doubt that refurbishing this one is practical. That would leave replacement.

    A new pack from Toyota is the most reliable choice but is pricey. Various refurbs are available, but can have questionable longevity.

    Since the car hasn't run in years, you might need to charge whatever pack you get as it could take some (many?) cranking attempts before you get the ICE to actually run.

    You also should get a more capable scantool. That Foxwell looks to only have OBD2 (ECM) functions. You need to check all ecu's for codes.

    Here's a thread that reviews several apps and devices for a smartphone. Some are can scan all (14-16) systems on a Gen 2 Prius. (I might suggest a tool that has bidirectional functions - being able to command things like the fuel pump on or off can be very useful).

    Or try to get a VCI cable and a copy of Toyota Techstream (the OE diagnostic software). Lots of posts in the forums on this.

    The irregular dash displays might point to a problem with communication on one of the car's data networks.

    https://priuschat.com/index.php?posts/3290690

    Posted via the PriusChat mobile app.
     
  8. Carall

    Carall Member

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    Check the fuses in the engine compartment. This happens when a fuse blows, which one I can’t say for sure right now.
     
  9. mntex

    mntex New Member

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    IMG_3266.png What scan tool is recommended and works with drprius, was looking at this one.
     
  10. mntex

    mntex New Member

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    Where can I test if I’m getting 219volts or current from the HV battery in the engine compartment. Took of safety switch from HV battery and there is no difference, still get the symbols on dash. So thinking I am not getting any current to start the engine. I know the safety switch is good, was tested.
     
  11. pasadena_commut

    pasadena_commut Senior Member

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    If you took off the HV safety and the car still didn't work, maybe the safety wasn't correctly installed in the first place?
     
  12. mr_guy_mann

    mr_guy_mann Senior Member

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    Go to the priusapp.com website and look at the OBD2 device reviews.

    That said, Dr Prius is super handy for looking at hybrid battery block voltages, but that's mostly all. Can get-clear some hybrid or ECM codes. Not much else.

    You should also look at some of the more capable (all system) options in the scantool review.

    When I see the dashboard not powering on completely like yours, I think that something is disrupting communication on one of the data networks. I would want to know how many ecu's (of the 14-16 on a Gen 2) can talk to a scantool.

    Posted via the PriusChat mobile app.
     
  13. mntex

    mntex New Member

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    Will this work The Autel Maxi AP200
     
  14. mr_guy_mann

    mr_guy_mann Senior Member

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    Yep, the AP200 is pretty good diagnostic bang for the buck. (get the AP200, not 200C, 200H, 200M or anything else)

    Many here also get Dr Prius along with a second OBD2 device just because it's so handy for battery voltages (but that depends on your budget).

    Posted via the PriusChat mobile app.
     
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  15. mntex

    mntex New Member

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    Ok got my scan tool this are the codes I found
    What codes would cause the car not to start?
     

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  16. pasadena_commut

    pasadena_commut Senior Member

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  17. mntex

    mntex New Member

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    I’m getting 215 v on the side of the battery but 0 on the other side with the safety switch on, how can these things be test with a multimeter. also the switch is getting harder to take off. IMG_3352.jpeg
     
  18. mr_guy_mann

    mr_guy_mann Senior Member

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    Your posts are a bit ... odd. The code scan shows C1259 and C1310 - these set when the hybrid control (or HV battery?) system has codes, but there are no codes for those systems.

    P0102 can certainly prevent the ICE from running (ie, the ICE spins at 1000 RPM for about 10 seconds but doesn't actually "run"). That could be the sensor, or wiring, or the connector, etc.

    The last picture of the battery pack. The "negative" side contactor (relay) is heat damaged. Toward the left side of the pic about halfway up. The copper plate on the contactor where the (-) battery lead is located. That plate is "burned" - probably overheated due to a loose connection.

    I would replace that contactor. Make sure all HV stud connections are torqued to 48 -INCH pounds.

    Posted via the PriusChat mobile app.
     
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  19. mntex

    mntex New Member

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    Can the relay/contactor be bypassed with some electrical wire 10 gauge ?
     
  20. mntex

    mntex New Member

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    I was thinking of bypassing the relay with 10 gauge wire or can this cause damage to other parts of the car? Has anyone tried this?