Replacing rubber hoses due to age

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by kehyler, Jul 21, 2019.

  1. kehyler

    kehyler Junior Member

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    Hi All,

    Not urgently, but its on the horizon. I'd like to replace many critical (defined as their failure would stop the car) rubber hoses soon on my 8 year old prius. One set I was thinking of was to start compiling the rubber hoses involved in the engine coolant system (they show some surface cracking at this point). Couple of questions:

    (1) Anyone know the PNs for the OEM hoses for the engine coolant tubes?
    (2) Any suggestions of other hoses to change while I am at it?

    Thanks!
     
  2. bisco

    bisco cookie crumbler

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    how many miles on her? hoses on a prius seem to never get replaced
     
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  3. Raytheeagle

    Raytheeagle Senior Member

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    I thought about doing them on our 2010 pre-emptively, but then said, meh;).

    Even though the hoses feel soft, they’re robust and are good for a long time(y).
     
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  4. bisco

    bisco cookie crumbler

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    if mendel hasn't done it, its not worth doing
     
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  5. Raytheeagle

    Raytheeagle Senior Member

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    The garage queen does lead a pampered life;).

    Maybe @Mendel Leisk has thought about it:whistle:?

    I bet he won’t admit it though given the low miles or kms :p.
     
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  6. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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    Never changed a coolant hose; cargo cult. :cool:
     
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  7. Raytheeagle

    Raytheeagle Senior Member

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    You’ve lapsed into sidewalk supervising:p.
     
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  8. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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    That might make it worthwhile

    Yes, is this a high mileage car? And does "blah" get pretty hot?

    This page has hose summary I think; scroll about halfway down for a second diagram with the myriad small ones:

    Radiator & Components for 2011 Toyota Prius | McGeorge Toyota Parts
     
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  9. schmuber

    schmuber Member

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    1. Disconnect both batteries
    2. Remove the air duct and wash/treat it separately
    3. Cover the throttle body
    4. Wash everything else with Simple Green or Dawn, rinse thoroughly
    5. Let it dry or blow dry it
    6. Spray 303 aerospace protectant on everything
    7. Put it back together
    8. Profit!
     
  10. Grit

    Grit Senior Member

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    That’s it... I’m quitting my job to clean Prius hoses.
     
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  11. kehyler

    kehyler Junior Member

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    The miles (88k) to me don't matter much since I think rubber dry rots and therefore the age in years matters more.
     
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  12. kehyler

    kehyler Junior Member

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    Thanks, I bookmarked that list!
     
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  13. jb in NE

    jb in NE Senior Member

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    On an 8 year old car, I wouldn't worry about it. Even on 20 year old cars, I have never had to replace a hose other than a vacuum hose (they tend to brittle at the ends and get air leaks). Coolant hoses and the like are quite sturdy.
     
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