wrx A/C turned on by itself on defront setting?

Discussion in 'Subaru Impreza' started by peter, Aug 27, 2004.

  1. peter

    peter Guest

    When I turn the air flow control to one of the rightmost settings (air to
    windshield), the A/C seems to turn on by itself as well. Is this normal?

    2002 impreza wrx
    peter, Aug 27, 2004
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  2. peter

    finch Guest

    Yes, it's normal.

    Stupid, but normal.
    finch, Aug 27, 2004
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  3. peter

    CompUser Guest

    Yes, normal and common on lots of cars, not just
    Subarus. The AC dehumidifies the blown air, the
    heater core heats it, and when it hits your
    windshield, it's hot, dry, and ready to suck up
    all that moisture. It can be more than you
    want/need tho, and some folks find it

    If you don't like this feature, it's pretty easy
    to change. Remove the center trim around
    radio/HVAC controls, and dismount the radio/sound
    unit. Looking down at the various HVAC gears &
    linkages, you'll see a small electric switch
    mounted on a white plastic gear on the passenger
    side, towards the back. The switch is mounted
    with one small phillips head screw. The switch
    is depressed when you rotate controls to Defrost
    position, and activates the AC. Remove the screw
    and tape the switch assembly back where it won't
    bother any moving parts, and the AC will no
    longer activate with Defrost. I put the screw in
    a small ziplock back and taped it up in the

    If you want to run the AC with Defrost, you can
    selectively activate it by pressing the AC
    button, whenever you like.
    CompUser, Aug 27, 2004
  4. peter

    FNO Guest

    FNO, Aug 27, 2004
  5. peter

    Guest Guest

    Set to defog the A/C system tries to condenses water out of the air before
    blowing it on the cold windscreen where it would condense creating more of
    the fog you were trying to get rid off.
    Guest, Aug 27, 2004
  6. peter

    Jim Stewart Guest

    Then you've never had the experience of driving
    your Ford product in the fast lane, in bad weather,
    and switching on the defroster only to see your
    entire windshield go completely opaque from condensation.

    Been there, done that, will take the Subaru
    approach any day.
    Jim Stewart, Aug 27, 2004
  7. Yes. The A/C is used so that humidity is removed. Same as A/C in your home.
    Peter Stathis, Aug 28, 2004
  8. peter

    BlueSTi Guest

    Mine does the same thing. Except, the A/C light comes on no matter
    what position I have the fan switch in. Well, except for off!

    BlueSTi, Aug 30, 2004
  9. That control position is not just directing air to the windshield, it also
    activates the AC to condense excess moisture out of the interior air.

    Florian Feuser /FFF/, Aug 30, 2004
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