Looking for help doing the heat exchanger bypass

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by redsprius, Apr 6, 2026.

  1. redsprius

    redsprius New Member

    Joined:
    Jun 2, 2025
    3
    1
    0
    Location:
    Georgia
    Vehicle:
    2018 Prius
    Model:
    Four
    Anyone located in the North Atlanta, Ga area that has done the heat exchanger coolant bypass? I'm looking for someone that can help me with this. Will make it worth it for you time. Car is fine but have close to 160k on my 2018 and would rather just be proactive about it.

    Thanks in advance.
     
    #1 redsprius, Apr 6, 2026
    C Clay likes this.
  2. PHEVisthefuture

    PHEVisthefuture Junior Member

    Joined:
    Apr 26, 2026
    37
    12
    0
    Location:
    Illinois
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    I too am interested in doing this but also have some mileage on mine and don't know if it's better to do it as the car ages, or to just leave it alone.

    FWIW most of the Prius Carfax reports I read for 4th gens didn't have the heat exchanger fix done, so if it happens, it seems like it either happens early or doesn't happen at all.
     
    #2 PHEVisthefuture, May 3, 2026 at 7:10 PM
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