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What is this stuff? Corrosion?

Discussion in '3rd Gen. Tacomas (2016+)' started by Vigilance777, Oct 17, 2020 at 9:28 AM.

  1. Oct 17, 2020 at 12:41 PM
    #21
    GDESMOND1976

    GDESMOND1976 DESMO Overland

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    it is corrosion. your zinc parts are in contact with carbon steel parts and possible nickel cad bolts. its just like battery terminals. 2 dissimilar metals in contact of each other with naturally corrode. Especially when there is electrical current flowing through the body of a truck. And no i dont mean that in a way that you will feel electricity or get shocked, but your battery and electrical system grounds to the body. Add moisture from underneath where the bolts attach and it does this. just like above, its not different than cad plated battery terminals getting attached to lead posts.
     
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  2. Oct 17, 2020 at 12:43 PM
    #22
    Scott17818

    Scott17818 Well-Known Member

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    was looking for mold from a leaky 3rd brake light, but not seeing evidence of that.. however i would clean up ASAP, and keep an eye on it, especially during/after a rain storm.. make sure carpets stay dry, and you dont have evidence of the rear window/light leaking. maybe throw a bucket of DAMP RID in the back seat, if you live in a humid loaction...
     
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  3. Oct 17, 2020 at 1:33 PM
    #23
    GOTSAND?18

    GOTSAND?18 Well-Known Member

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    Moisture getting around metal parts .then they start to corrode over time .
     
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  4. Oct 17, 2020 at 1:49 PM
    #24
    Mopar Mussel

    Mopar Mussel Likes the 3rd Gen AT

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  5. Oct 17, 2020 at 2:46 PM
    #25
    Vigilance777

    Vigilance777 [OP] Member

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    I live in Salt Lake City. Ok I'm glad to have this shit identified. I'll try cleaning it up. Also, I never thought a third brake light could leak. Gonna check that too.
     
  6. Oct 17, 2020 at 3:50 PM
    #26
    Chew

    Chew Not so well known user

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    Definitely check 3rd, very good chance that's it
     
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  7. Oct 17, 2020 at 4:02 PM
    #27
    gotoman1969

    gotoman1969 Well-Known Member

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    This ^^^^
     
  8. Oct 17, 2020 at 4:08 PM
    #28
    RedWings44

    RedWings44 Well-Known Member

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    Yeah, it's not unique to Toyota. Although Toyota's is far more of a pain in the ass to fix than my GMC. No issues for me so far, but plenty have had the issue. It'll look as if your rear window is leaking. Another indicator is if you find any moisture in the housing itself. But just because it appears dry doesn't mean you don't have a leak. A bead of silicone will work too if you don't want to go through the dealership fix.
     
  9. Oct 17, 2020 at 4:12 PM
    #29
    T-yoda

    T-yoda Well-Known Member

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    You’ll know a 3rd brake light leak if you see mold under the carpet of the rear seats, Or carpet is damp. Run your hands under that carpet on both sides. Water drips down the back window, behind the panels and is hard to spot if you don’t know what your looking for.
     
  10. Oct 17, 2020 at 4:29 PM
    #30
    Crionchip

    Crionchip Well-Known Member

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    So as I write this my truck is in the shop, will be for another week or so as I discovered that my 3rd brake light was leaking and getting carpet wet, as well as headliner and seats. Anyway I was able to convince toyota to cover it even though it is out of warranty. So they are also replacing all of the sound mat and all things that got wet. Mine was so bad I actually had mold. So I would suggest using your camera on your phone to take pictures of the headliner and seats, due to light filtering of your camera it will show what you cannot see.
     
  11. Oct 17, 2020 at 5:02 PM
    #31
    zoo truck

    zoo truck Well-Known Member

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    Looks like terminals on an old lead cell battery.
     
  12. Oct 17, 2020 at 5:06 PM
    #32
    RedWings44

    RedWings44 Well-Known Member

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    It depends when the last rain was and given that OP is in Utah, I don't know how recently that would be.
     
  13. Oct 17, 2020 at 5:32 PM
    #33
    T-yoda

    T-yoda Well-Known Member

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    “Mold” and Toyota usually equals “goodwill”
     
  14. Oct 18, 2020 at 7:11 AM
    #34
    RX1cobra

    RX1cobra Well-Known Member

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    Take this in asap unless my eyes are deceveing me the webbing broke and that buckle isn't even attached and will pull right off.
     
  15. Oct 18, 2020 at 7:19 AM
    #35
    STrooper

    STrooper For HIS glory!

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