Heater fan groan

Discussion in 'Gen 2 Prius Main Forum' started by qmanqman, Nov 1, 2025 at 2:42 PM.

  1. qmanqman

    qmanqman Active Member

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    Now that it's cold and I got the heat on from time to time the fan will kind of make a groaning noise intermittently. Not very often but every now and then. Is there a simple and easy way to lube the fan without having to tear the dash apart and pull the Box out?
     
  2. Tombukt2

    Tombukt2 Senior Member

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    Getting time for fan motor no taking dash apart 3 10 mm move a piece of plastic . Blow out hole and vac it w shop vac. Put in new .
     
  3. pasadena_commut

    pasadena_commut Senior Member

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    Does it make that noise if the fan is run and the heat isn't on? If not, it might be air in the heater core rather than the blower itself. I don't recall if the Prius has a valve that controls whether coolant goes through the core. On cars that do those sometimes make noises when the valve opens or closes. Same thing with blend door actuators.