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Corroded AC wiring harness 2010 - anyone heard of this?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Prius-Alfa, Sep 15, 2014.

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  1. DaneH5

    DaneH5 Member

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    Anyone have a make and model yet?
     
    #61 DaneH5, Sep 22, 2014
  2. DaneH5

    DaneH5 Member

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    They said compressor is still on the vehicle, so might cost extra for it to be removed.
     
    #62 DaneH5, Sep 23, 2014
  3. Den49

    Den49 Member

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    Thanks to Prius-Alpha alerting us about corrosion of the compressor control circuit wire connector, I was prompted to neutralize the corrosion that you see in the bottom picture of post #25 above, paint the base of the connector and apply Eck ("Electrolysis, Corrosion, Kontrol") dielectric coating to the connection. Below is a picture of the renewed connector.

    [​IMG]


    Below is a picture of the products I used.

    [​IMG]


    The Loctite Extend Rust Neutralizer was applied first, followed by RUST-OLEM paint (black and white mixed to make gray), and then the Eck product inside the connection. I found the Eck product online at:

    What Is Eck Corrosion Prevention Coating? - Eck by Eck®

    When I called the company to ask whether the Eck product would work for the AC compressor connector, they provided me with a free sample and the technical data for the product. It looks impressive and should work a lot better than ordinary dielectric grease.
     
    #63 Den49, Sep 27, 2014
  4. DaneH5

    DaneH5 Member

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    Is there a before picture??
     
    #64 DaneH5, Sep 27, 2014
  5. Den49

    Den49 Member

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    Yes. The bottom picture in Post #25 of this thread is the "before" picture.
     
    #65 Den49, Sep 27, 2014
  6. Prius-Alfa

    Prius-Alfa Junior Member

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    Thanks for the suggestions and those are good questions. I'll look into some of those.

    The repair is a done deal. Doing it myself was not an option for a number of reasons.

    Update: I brought the old compressor home with me. It turns out I was wrong about those two fasteners on the plate the receptacle is mounted on. They are in fact small bolts with funky heads. I was able to bear down on them with a pair of channel locks and break them free. Still doesn't help for a repair though because there isn't enough slack on whatever the plug is connected to on the inside to pull it up more than about a quarter inch. The black plastic of the plug extends through the plate further inside the housing and has an o-ring around it. It doesn't come out far enough to see wires. You would have to remove the larger plate on that side of the compressor to get access to the connection inside. The three bolts that hold that plate on are recessed so one of those fancy sockets is required to get them out.
     
    #66 Prius-Alfa, Sep 27, 2014
    Mendel Leisk likes this.
  7. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    All the wires went in from the outside, and all the living slack pulled back on the in side: waste not want not. :ROFLMAO:
     
    #67 Mendel Leisk, Sep 27, 2014
  8. DaneH5

    DaneH5 Member

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    I bet the black connector is just that. A connector that can be disconnected like the outside. It is most likely just a place to transition from the outside world to the sealed inside world.

    Do you have the make and model of the compressor?
     
    #68 DaneH5, Sep 28, 2014
  9. Prius-Alfa

    Prius-Alfa Junior Member

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    Denso HFC134a
     
    #69 Prius-Alfa, Sep 29, 2014
  10. DaneH5

    DaneH5 Member

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    I sent an information request to Denso on the unit.
     
    #70 DaneH5, Sep 29, 2014
  11. Former Member 68813

    Former Member 68813 Senior Member

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    Low miles or not, it has to happen after almost 1000 years.
     
    #71 Former Member 68813, Sep 29, 2014
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  12. Prius-Alfa

    Prius-Alfa Junior Member

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    Thanks for giving me a good laugh. I needed that. :D
     
    #72 Prius-Alfa, Sep 30, 2014
  13. Former Member 68813

    Former Member 68813 Senior Member

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    On a more serious note, what parts does one need to remove to get access to the said connector?
     
    #73 Former Member 68813, Sep 30, 2014
  14. Prius-Alfa

    Prius-Alfa Junior Member

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    There's a good description in post #60 above in this thread on page 3. It's easy to do. Just three bolts to remove to get the air intake out of the way.
     
    #74 Prius-Alfa, Sep 30, 2014
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  15. OzPrius

    OzPrius Junior Member

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    Checked mine yesterday and it is fine. Thanks for a very informative thread guys :)
     
    #75 OzPrius, Sep 30, 2014
  16. DaneH5

    DaneH5 Member

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    What kind of pizza did you have?
     
    #76 DaneH5, Sep 30, 2014
  17. qettyz

    qettyz Active Member

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    I saw this thread about year ago and this started haunting me...
    Today i squeezed myself next to that AC 12V connector and lubed it well with contact cleaner what was quite oily stuff. I hope it protects nicely untill next summer when i dive there again and do same thing again. Now i can sleep better ;)

    used this stuff:
    upload_2019-6-23_17-2-52.png
     
    #77 qettyz, Jun 23, 2019
  18. gliderman

    gliderman Active Member

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    Great info! Thanks!
     
    #78 gliderman, Aug 2, 2019
  19. GreenTerrorPrius

    GreenTerrorPrius Junior Member

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    Just adding this here as i will be checking this part as well
     
    #79 GreenTerrorPrius, Oct 10, 2020
  20. ChapmanF

    ChapmanF Senior Member

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    HFC134a is just the refrigerant it's designed to be filled with.

    The model might be an ES18. That's what's in my mind, but I'm not looking at one right now. They have different sizes; the 18 refers to the displacement (in cm³? I'm not positive).

    But I'm pretty sure you could get a basic ES18 in either belt-drive or electric flavors. It's probably best to go by the Toyota ten-digit part number.
     
    #80 ChapmanF, Oct 10, 2020
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