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Prius 2008 No Heat & Red Triangle

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Michael Hooker, Mar 8, 2022.

  1. Michael Hooker

    Michael Hooker New Member

    Joined:
    Mar 8, 2022
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    Location:
    Nashville
    Vehicle:
    2008 Prius
    Model:
    N/A
    My 2008 Prius after two hours of Interstate (not city) Driving, has the following symptoms, the heater will stop working and the red triangle will come on. The car still drives but I have no heat. Different mechanics have drained the radiator/coolant at least three times and the Water pump has been changed. Furthermore, the heater bypass valve has been changed twice. I am at my wits end if anyone has any suggestions please let me know. Thank you
     
    #1 Michael Hooker, Mar 8, 2022
  2. pasadena_commut

    pasadena_commut Senior Member

    Joined:
    May 2, 2019
    1,355
    413
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    Location:
    Southern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    There should be trouble codes if the red triangle is set. What are they?
     
    #2 pasadena_commut, Mar 8, 2022
    SFO likes this.
  3. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    16,470
    8,383
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    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    Heater will stop working? It works and it Stops working while driving?
     
    #3 JC91006, Mar 8, 2022
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