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cabin blower speed changes in reverse

Discussion in 'A3/S3/Sportback (8P Chassis)' started by freegeek, May 29, 2014.

  1. freegeek
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    freegeek Member

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    [May 29, 2014]
    I've noticed that my cabin fan is not as powerful as it used to be, except when I select reverse, you can then hear it blow properly.

    Anyone come across this or a fix?
    #1
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  3. fangio
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    fangio Well-Known Member

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    [May 29, 2014]
    When you're in reverse, the heater goes into re-circulation mode, the flaps to the outside close so the fan sounds faster.
    #2
  4. Artimus
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    Artimus Short Back

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    [May 29, 2014]
    As above ...so the exhaust fumes aren't sucked into the cabin.
    #3
  5. Marshy
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    Marshy Active Member

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    [May 30, 2014]
    Yeah so if it sounds normal when on recirc is your pollen filter blocked?
    #4
  6. Artimus
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    Artimus Short Back

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    [May 30, 2014]
    Maybe the flaps aren't closing.
    #5

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