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Water Pump Problem

Discussion in 'Gen III Prius Care, Maintenance & Troubleshooting' started by Crabricorn, Jun 30, 2010.

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  1. Crabricorn

    Crabricorn Junior Member

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    Location:
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    Your Vehicle Year:
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    So I drove the prius from TX to Las Vegas and all of a sudden warning lights came on and the car died. It is 2010 with 7500 miles on it. After getting it to the dealer (it eventually restarted), I was told the water pump was kaput. They replaced it under warranty of course, but I was out my car for 3 days - they had to get the part in. I'm starting to worry if this car is a lemon. This may be premature, but what can I say. It has been in shop several times (due to weird rattles) and now this! Egads!

    Any thoughts/ideas?
    1 person likes this.
  2. tumbleweed

    tumbleweed Senior Member

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    I have some weird rattles too, not to many now that the weather is warm. A lot of the Gen3 cars have interior rattles, some of the Gen2 cars do also, I don't like them but they won't effect drivability or reliability. If you look at some of the "rattle threads" you will find ways some of us have fixed at least a few of them.

    The water pump is a different matter, as you said when that happens you are stopped. Fortunately yours is the first such problem I have heard about on this forum. I suspect now that it is fixed your Prius will be just as reliable as the rest of ours are.

    The only reliability problem I have heard about with the Gen3 is the 12V battery. A lot of people have reported dead 12V batteries after leaving the car for a few days, no one knows why yet. Fortunately a jump start usually gets them going again.

    After a few thousand more good reliable miles you may feel better about your Prius. :)
  3. josh2008

    josh2008 Hyundai Tech

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    There's actually a TSB for water pump issues. They have improved the part now (which all if the newer cars have). So, no worries folks. :)
  4. Prius42

    Prius42 New Member

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    Josh,

    Now you have me worried! Getting stranded really sucks, especially if it takes several days to get a replacement part. I imagine the failure rate of the original part can't be that high, or we would have probably heard of more folks with the problem. However, do you have any idea of what the failure rate is and approximately when they started installing the new part in "newer" cars? Thanks!
    1 person likes this.
  5. josh2008

    josh2008 Hyundai Tech

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    Location:
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    MODEL PLANT PRODUCTION CHANGE EFFECTIVE VIN*

    Tsutsumi 1 JTDKN3DU#A0108813


    Prius Tsutsumi 2 JTDKN3DU#A1140374


    Toyota Auto Body JTDKN3DU#A5106915




    * Underlined number in VIN (11th digit) represents assembly plant line code.



    All VIN'S prior to those above have the *old* style water pump.



    5 people like this.
  6. guinness_fr

    guinness_fr Junior Member

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    Thanks for the VIN numbers ! :rockon:
    Now my VIN ends with 11025xx, that means I have the old-style water pump, what happens if it fails just when I am out of warranty?
    Is there a way to have it replaced before that?
  7. josh2008

    josh2008 Hyundai Tech

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    Very welcome. No way to get early replacement that I am aware of. It's covered under 5yr/60k mile warranty, so you've got plenty of time. If it's like any other Toyota waterpump it will fail well before then.
  8. LoveMyPriusIII

    LoveMyPriusIII New Member

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    Worries for me. I bought mine last June before the "improvements".

    This doesn't make me feel good at all but thanks for the heads up.
  9. josh2008

    josh2008 Hyundai Tech

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    If it makes you feel any better, my car has the older pump too.
  10. cobradb

    cobradb Member

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    thanks for the info,, its good of you.
    what does this "Tsutsumi 1 " etc,, mean ...assy plant name?

    my 1/10 prod date, 1154390 is the new pump if i read this correctly?

    i really like my Gen 3,, my first Toyota
  11. Prius42

    Prius42 New Member

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    Thanks for the info! Unfortunately, like you I have the old one (manufactured 10/09, bought 03/10). ARRGHGHGH!
  12. LoveMyPriusIII

    LoveMyPriusIII New Member

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    That's why they always say don't buy the first year of a redesign. No problems for me yet but I hope I don't end up regretting buying the first year of a new generation. This is an example of a "bug" they fixed even before the next year's model is released.
  13. adamace1

    adamace1 Senior Member

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    You guys do realize out of thousands of 2010 owners that go on this site one person has posted a problem? I think we should be fine.
    1 person likes this.
  14. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Hi Josh,

    I assume that we are talking about the inverter coolant pump?
    For future reference, what is the TSB number?
  15. owl1966

    owl1966 New Member

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    hello to all my vin # a0091563 how do i stand new or old ???

    thanks jim
  16. tumbleweed

    tumbleweed Senior Member

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    old
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  17. tickmark40

    tickmark40 New Member

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    My car was built in 10/09 even though I bought it in April, 2010. Should I have the dealer check the water pump? I am not sure when the newer cars your refer to were built.
  18. josh2008

    josh2008 Hyundai Tech

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    We're talking about (or atleast I am) the electric engine coolant pump on the 2010+ models. I'll get the TSB number when I go back to work Monday.
  19. ramdulari

    ramdulari New Member

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    That's not very reassuring. What if it does not fail before then?

    If Toyota is so sure that it will fail before the warranty period expires, then it should offer to replace it pre-emptively, or even issue a recall.
  20. guinness_fr

    guinness_fr Junior Member

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    Any news about the TSB number for the 2010 engine coolant pump?
    Not many people have reported the issue on this site...