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Rusted out cross brace

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by vand8, Aug 15, 2024 at 6:08 PM.

  1. vand8

    vand8 Junior Member

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    Dangit .... rust has taken out my passenger side brake cable, and now my rear cross brace, and my car is only 9 years old. I believe it's part number 53605-47021. Over $200 for a simple steel tube. Fortunately my rusted out passenger side parking brake passed the year inspection since the driver side still holds strong, but this piece failed me instead.
     

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  2. Air_Boss

    Air_Boss Senior Member

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    Second such we’ve seen here. Odd failure. Lots of road salt and anti-icing chemical exposure?
     
  3. vand8

    vand8 Junior Member

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    I live in upstate NY and bought car used from Vermont, so yes lots of road salt. I tried to car wash after snow, but looks like it didnt help in the end. My experience is Toyota has bad at rust protection in my time up here.

    Is there a thread for the other failure? I want to make sure I get the right part.
     
    #3 vand8, Aug 15, 2024 at 6:37 PM
    Last edited: Aug 16, 2024 at 6:06 AM
  4. vand8

    vand8 Junior Member

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    I found the thread. I blasted the bolts with penetrating oil and then tested them after dinner. All 4 bolts broke loose real easy, so I'll just need the overpriced bar and looks like it should take only 15 minutes.

    I believe I need 53605-47021, correct?
     
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  5. Air_Boss

    Air_Boss Senior Member

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    Description: BRACE SUB-ASSY, REAR SUSPENSION. Part Number: 53605-47021. Usage: ZVW41
     
  6. vand8

    vand8 Junior Member

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    Thanks. I may preemptively get fuel tank straps too. The bolt end on the right strap looked very rusted. I'll look again today before I order parts, but definitely don't want a fuel tank strap to snap for me or future owner.
     
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    The rear jacking point looks pretty bad too. Hard to judge from pic, but be careful with it.
     
  8. vand8

    vand8 Junior Member

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    It is pretty bad actually. I looked that part up but it's not worth replacing. It'll be cheaper to get pinch weld adapters for the floor jack.
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Not sure we're on the same page. This is the rear jacking point:

    upload_2024-8-16_8-15-1.png

    It's part of the main body, not a bolt-on component. Maybe be more solid than it looks, but worth caution.

    Boiled linseed oil, applied with brushes, has worked well for me. Even once rust has started.

    In attached Repair Manual excerpt, page 2 has the your rusted-out cross brace torque value.
     

    Attached Files:

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  10. vand8

    vand8 Junior Member

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    We're on the same page Mendel. You're right it's not bolt on, though you can buy the parts for about $400, plus labor to weld it all up. Hence why I said it's not worth replacing.

    I'm debating whether to do the fuel tank straps, The rear mounting points look OK, but the front ones are pretty rusted, though seem to have some decent meat on them.
     

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  11. Mendel Leisk

    Mendel Leisk Senior Member

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    IIRC they don't use road salt in Japan. Pretty sorry state.

    About 4 years in with our '10 I noticed an absurd amount of rust on ours, particularly the rear suspension. Never had it happen so bad with Previous Hondas. I've heard too, of late certain coatings/paints/treatments have been banned, the more effective ones.

    Again, I just brushed off the loose stuff and coated everything I could reach with boiled linseed oil. It's been quite effective and held up good. I'll remove some plastic "protection" panels too, for access. And oil-soak the bolts that held them on.