I have a 2018 PriusV High coolant temperature warning light flash a few times and then disappeared

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Tong PriusV, Dec 1, 2019.

  1. Tong PriusV

    Tong PriusV New Member

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    Three
    When I was driving on the freeway, I saw the High coolant temperature warning light flash a few times and then disappeared. Then I refilling the coolant. But it happened again.If it is a cooling system problem, why does it always happen after driving all day. And it disappeared after a few flashes. Everything works fine after that. Has anyone else had the same problem?
     
    #1 Tong PriusV, Dec 1, 2019
  2. Dharma1212

    Dharma1212 New Member

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    Hi Tony, I have the same issue currently. Did you ever find out what the issue was?
     
    #2 Dharma1212, Mar 27, 2024
  3. Mendel Leisk

    Mendel Leisk Senior Member

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    A 2018 Prius v is mechanically more-or-less the same as a 3rd gen Prius. What's your "2018 Prius", a regular, hatchback-style 4th gen Priu?
     
    #3 Mendel Leisk, Mar 28, 2024
  4. rjparker

    rjparker Tu Humilde Sirviente

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    No 2018 v’s were sold in the US. The title came from a 2019 post. By chance yesterday @Darma’s is asking the question about his 2018 Prius.

    In most cases high temps are caused by failing water pumps which still push enough coolant at low loads. If you have to refill the coolant as the original member stated, there is a leak somewhere or the system got so hot the reservoir pressure relief cap opened..
     
    #4 rjparker, Mar 29, 2024
    Mendel Leisk likes this.
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