What else should be replaced when replacing the water pump?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by gatorback, May 5, 2026 at 9:52 PM.

  1. gatorback

    gatorback Junior Member

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    A 2010 (16 y.o) Prius with 95K miles was inherited and I would like to prevent any damage. As I understand it the water pump should be replaced because of its age?

    If that is correct, what other parts should I replace while I am in there?
     
    #1 gatorback, May 5, 2026 at 9:52 PM
  2. CR94

    CR94 Senior Member

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    My impression is that coolant pump failures at such low mileage are rare, assuming it hasn't been coping with overheated coolant.

    When the pumps have to be replaced, people often replace the coolant thermostat at the same time, because it's easy then. However, I've yet to hear of an original thermostat actually failing at any mileage.
     
    #2 CR94, May 5, 2026 at 10:41 PM
  3. PriusCamper

    PriusCamper Senior Member

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    I still don't understand why Gen3 owners have been so passive about engine destroying ability of this valve failure via class action lawsuits? Head gasket failure due to a stuck valve boosting engine temperature is a smoking gun... Guess its not common enough for outrage of significance?
     
    #3 PriusCamper, May 6, 2026 at 12:08 AM
    Last edited: May 6, 2026 at 12:21 AM
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