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A/C noise in backseat

Discussion in 'Gen 3 Prius Main Forum' started by SeanMoto, Jul 30, 2011.

  1. SeanMoto

    SeanMoto New Member

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    Hello I'm new to the chat site. I'm on my second Prius, love my Prius btw. I just bought a 2010 and notice when the a/c is on there is a somewhat loud air noise coming from the back seat. It seems to come and go. Is this normal? My 05 never made this noise.
     
    #1 SeanMoto, Jul 30, 2011
  2. olyprius

    olyprius Member

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    That sound you are noticing from behind could be the air flowing within the battery vent area behind the front passenger back seat. That would be my guess.

    :welcome:
     
    #2 olyprius, Jul 30, 2011
  3. mad-dog-one

    mad-dog-one Prius Enthusiast

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    Does the noise come from the traction battery cooling fan to the right of the passenger-side rear seat. It may be that the heat prompting you to run the A/C is also triggering the battery cooling fan. Watch and listen under variable temperature circumstances. I would not expect running the A/C and activation of the battery cooling fan to coincide perfectly very often.
     
    #3 mad-dog-one, Jul 30, 2011
  4. bisco

    bisco cookie crumbler

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    it seems the battery cooling fan on the gen III is louder than the gen II in some cases. i never even knew there was a fan in there on my 04 and 08.
     
    #4 bisco, Jul 30, 2011
  5. Ghoti

    Ghoti Member

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    I've found the battery fan to be much more noticeable in my '11 than it was in my '05, but I rapidly got used to it once I realized what it was.
     
    #5 Ghoti, Jul 31, 2011
  6. Paradox

    Paradox Prius Enthusiast / Moderator
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    My first thought as well, it's the fan for cooling the traction battery.
     
    #6 Paradox, Jul 31, 2011
  7. SeanMoto

    SeanMoto New Member

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    Yeah, it is coming from that vent where the cooling fan is. Huh I guess it's a little noiser than my 05.
    Thanks for the comments.
     
    #7 SeanMoto, Jul 31, 2011
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