2014 Prius C air in engine coolant circuit

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Patrick herod, Feb 10, 2026 at 8:10 PM.

  1. Patrick herod

    Patrick herod New Member

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    Location:
    Winfield MO
    Vehicle:
    2014 Prius c
    Model:
    N/A
    Hey everyone, new to this forum. I have just replaced my Prius C head gasket and after adding all the fluids back, I can’t seem to get the air out of the system. Ive let it run in maintenance mode for a long time and it just ends up overheating (I shut it off before it gets too hot). Still, no cabin heat. I even drained the coolant back out and added more just in case it had a large bubble in it. I’ve tried tilting the car with a jack on both sides, and driving it up on ramps. While squeezing the hoses I get the occasional bubble out of it but really seems like there’s a large bubble somewhere in the system. The hoses do get pressurized once the engine warms which tells me the coolant pump is working (plus, no engine code for it). I’m stumped. Any ideas would be awesome!! It’s so hard to find information on the Prius c.