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Under Body Rust... What is acceptable?

Discussion in '3rd Gen. Tacomas (2016+)' started by Rocky Mtn High, Jun 30, 2016.

  1. Jun 30, 2016 at 11:23 AM
    #1
    Rocky Mtn High

    Rocky Mtn High [OP] Member

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    First off, I have very few gripes about my TRD Sport 4x4. Overall, she has been great for my needs... camping, rafting, hauling landscaping materials and general commuting. I have 4,500 miles on the odometer and will be taking her in for my 5k service soon. However, I want some opinions before I do so I am more prepared for my discussion with the service tech.

    I have noticed some rust on both sides of the under body below the passengers door and drivers door. Looks like the black coating they put on didn't entirely cover all the under body and has allowed the metal to be exposed to moisture and magnesium chloride (during winter months). Currently, it seems to just be on the surface and on welds. I am not deeply knowledgeable about cars, though owning this truck has increased my desire to learn much more.
    IMG_1052.jpg IMG_1053.jpg IMG_1054.jpg

    So, is this rust acceptable?
    What questions or expectations should I have for the service department?
    Anyone else experiencing this on your truck?

    Thanks
     
    Last edited: Jun 30, 2016
    SOSHeloPilot likes this.
  2. Jun 30, 2016 at 12:22 PM
    #2
    bobrown14

    bobrown14 Well-Known Member

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  3. Jun 30, 2016 at 12:24 PM
    #3
    T4RFTMFW

    T4RFTMFW #DBBeer

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    That's unacceptable.
     
  4. Jun 30, 2016 at 12:39 PM
    #4
    highwhey

    highwhey Well-Known Member

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    I would take more pictures of all the affected areas and start a claim with Toyota corporate. At least you will have documentation and a "paper trail" beginning at 4500 miles. Make sure you have your tech document it.

    Toyota of course will claim its normal, but when it gets worse, at least you have it documented.
     
  5. Jun 30, 2016 at 12:42 PM
    #5
    SOSHeloPilot

    SOSHeloPilot My Favorite Song :)

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    ...^^^... New truck ... I need to check mine ... it has 2,500 miles ... :eek: :eek: :eek:
    .
     
  6. Jun 30, 2016 at 12:49 PM
    #6
    jberry813

    jberry813 Professional Fluffer Moderator

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  7. Jun 30, 2016 at 1:14 PM
    #7
    mcdean

    mcdean Well-Known Member

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    Based on a study conducted by CDOT (Colorodo Dept. of Transportation) MgCl is corrosive and I would suggest that any exposed metal will be an issue. Conclusion from the report:

    Link to report: https://codot.gov/programs/research/pdfs/2002/magautocor.pdf
     
  8. Jun 30, 2016 at 1:23 PM
    #8
    Friggin Fuego

    Friggin Fuego Well-Known Member

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    I remember when I spotted a 2016 Tacoma with 6 miles on the odometer at a car show with rust. The fanboy deniers on the forum said it was "bronzing" and not rust. Then I get laughed at for checking underneath of new vehicles before buying them.

    Here is a link to my thread about that 6 mile rusty Tacoma:

    https://www.tacomaworld.com/threads/2016-taco-at-car-show-with-rust.403026/
     
    jmaack likes this.
  9. Jun 30, 2016 at 1:26 PM
    #9
    stan23

    stan23 Well-Known Member

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    That's normal. My CA truck looks exactly the same. I'm not concerned.
     
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  10. Jun 30, 2016 at 2:05 PM
    #10
    aero90

    aero90 Well-Known Member

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    I'm at 5000 miles and the bolts by the control arms look like they have 20 years on them already. When I would work on my 15 year old ford (always a CA truck as well) there was hardly ever any rust.

    I think it is just a Toyota thing....I'm not too concerned, but then again I live in CA.
     
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  11. Jun 30, 2016 at 2:14 PM
    #11
    jmaack

    jmaack Well-Known Member

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    Bronzing. Hahha
     
  12. Jun 30, 2016 at 2:28 PM
    #12
    Aussiek2000

    Aussiek2000 Well-Known Member

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    Come to the salt belt. Our vehicles look like that off of the transport truck.
     
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  13. Jun 30, 2016 at 2:41 PM
    #13
    Rocky Mtn High

    Rocky Mtn High [OP] Member

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    Interesting report. I am in Colorado and know CDOT loves to apply mag chloride even if there is only a hint of a storm coming. However, the findings of the report are that MgCl2 is less corrosive than NaCl in arid conditions. Colorado is definitely a dry climate. While we have had quite a bit of humidity this year, we typically have very low relative humidity. Wonder if CDOT took this into consideration when choosing a deicer and that is why they choose MgCl2 or if it is all based on the price of the deicer? Thanks for the info.
     
  14. Jun 30, 2016 at 2:43 PM
    #14
    Rocky Mtn High

    Rocky Mtn High [OP] Member

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    I will definitely take more pictures and start a claim so I at least have documentation. Thanks for the helpful response.
     
  15. Jun 30, 2016 at 2:47 PM
    #15
    Friggin Fuego

    Friggin Fuego Well-Known Member

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    Pretty much like the 6 mile Tacoma mentioned in this thread?
     
  16. Jun 30, 2016 at 2:48 PM
    #16
    Rocky Mtn High

    Rocky Mtn High [OP] Member

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    This is very similar to what I see.
     
  17. Jun 30, 2016 at 2:49 PM
    #17
    SOSHeloPilot

    SOSHeloPilot My Favorite Song :)

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    ...^^^... I had a white car in a Montreal winter ... and surface rust started immediately after first snow & road salt ... made me crazy ... :eek:
    .
     
    Last edited: Jun 30, 2016
  18. Jun 30, 2016 at 2:50 PM
    #18
    jberry813

    jberry813 Professional Fluffer Moderator

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    I'm telling ya. Dealer isn't going to care about the tiny bit of surface rust. Just take care of it yourself annually and your frame won't end up like swiss cheese. At this point, my truck has more rattle can than factory powder coat.
     
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  19. Jun 30, 2016 at 3:00 PM
    #19
    Rocky Mtn High

    Rocky Mtn High [OP] Member

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    You just spray it over what is already there? Or do you buff then spray?
     
  20. Jun 30, 2016 at 3:01 PM
    #20
    jberry813

    jberry813 Professional Fluffer Moderator

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    Just spray over.
     

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