1. Offline

    Crabricorn Junior Member

    Member Since:
    Oct 30, 2009
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    Location:
    Texas
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    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 people like this.
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    tumbleweed Senior Member

    Member Since:
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    Location:
    Eastern Oregon
    Your Vehicle Year:
    2010 Prius
    Model:
    V
    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. Offline

    josh2008 Hyundai Tech

    Member Since:
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    Location:
    Princeton, WV
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    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. Offline

    Prius42 New Member

    Member Since:
    Mar 20, 2010
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    Location:
    Maryland
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    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!
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  5. Offline

    josh2008 Hyundai Tech

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    Location:
    Princeton, WV
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    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. Offline

    guinness_fr Junior Member

    Member Since:
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    Location:
    france
    Your Vehicle Year:
    2010 Prius
    Model:
    N/A
    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. Offline

    josh2008 Hyundai Tech

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    Location:
    Princeton, WV
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    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. Offline

    LoveMyPriusIII New Member

    Member Since:
    Jun 14, 2009
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    Location:
    Florida
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    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. Offline

    josh2008 Hyundai Tech

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    Location:
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    2012 Prius Plug-in
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    Plug-in Base
    If it makes you feel any better, my car has the older pump too.
  10. Offline

    cobradb Member

    Member Since:
    Mar 27, 2010
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    Location:
    tn
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    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. Offline

    Prius42 New Member

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    Location:
    Maryland
    Your Vehicle Year:
    2010 Prius
    Model:
    IV
    Thanks for the info! Unfortunately, like you I have the old one (manufactured 10/09, bought 03/10). ARRGHGHGH!
  12. Offline

    LoveMyPriusIII New Member

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    Location:
    Florida
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    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. Offline

    adamace1 Senior Member

    Member Since:
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    Location:
    Charlotte, NC
    Your Vehicle Year:
    2010 Prius
    Model:
    II
    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 people like this.
  14. Offline

    Patrick Wong DIY Enthusiast

    Member Since:
    Mar 8, 2008
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    Location:
    Green Valley, AZ
    Your Vehicle Year:
    2007 Prius
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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. Offline

    owl1966 New Member

    Member Since:
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    Location:
    n.tonawanda ny
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    hello to all my vin # a0091563 how do i stand new or old ???

    thanks jim
  16. Offline

    tumbleweed Senior Member

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    Location:
    Eastern Oregon
    Your Vehicle Year:
    2010 Prius
    Model:
    V
    old
    1 people like this.
  17. Offline

    tickmark40 New Member

    Member Since:
    May 5, 2010
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    Location:
    Brownwood, TX
    Your Vehicle Year:
    2010 Prius
    Model:
    IV

    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. Offline

    josh2008 Hyundai Tech

    Member Since:
    Sep 2, 2008
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    Location:
    Princeton, WV
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    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. Offline

    ramdulari New Member

    Member Since:
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    Location:
    NJ
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    2010 Prius
    Model:
    V
    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. Offline

    guinness_fr Junior Member

    Member Since:
    Nov 7, 2009
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    68
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    Location:
    france
    Your Vehicle Year:
    2010 Prius
    Model:
    N/A
    Any news about the TSB number for the 2010 engine coolant pump?
    Not many people have reported the issue on this site...

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