Air conditioner turns on by itself

Discussion in 'Issues, Warranty, Recalls, TSB' started by jojormot, Nov 11, 2019.

  1. jojormot

    jojormot New Member

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    Hey all, anyone else having the issue of the AC turning on by itself when it's not supposed to? I have Auto mode off and AC off. In this configuration, the AC will come on and blow cold air every now and then for sometimes only a few minutes but other times an extended amount of time. This happens even when the outside temp is like 60 and inside is set to 70, which is annoying. Funny thing is I've noticed this happening on other newer vehicles too.
     
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  2. s219

    s219 Well-Known Member

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    With most auto climate control systems, the AC cycles to dehumidify the air, and it can happen at any temperature, not just during cooling season. Unless you have a reason to override AC, you may as well leave it alone. The auto climate control systems don't usually behave predictably when you start overriding functions.
     
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  3. anajri

    anajri Active Member

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    i dont know
    i also feel that the car, changes setting by itself sometimes....... the preset stations on the radio sometimes are where i felt them sometimes it changes. the lanes safety sistem sometimes turn on by it self it has a mind of its own jejeje
     
  4. Webweasel

    Webweasel Well-Known Member

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    Are you using both keys? Each key can be setup with a different driver profile. That would explain your issues.
     
  5. OP
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    jojormot

    jojormot New Member

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    Yeah, but why cold air? The AC could be on but blow warmer air to dehumidify. If it's less than 60 outside and I have it set to 70, obviously it's a bit chilly, so I wouldn't want cold AC air blowing to make it even colder inside.
     
  6. anajri

    anajri Active Member

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    no just one
     
  7. DesmoSD

    DesmoSD Well-Known Member

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    If you Google BMW AC turns on automatically, you'll find multiple threads about it.

    https://f30.bimmerpost.com/forums/showthread.php?t=1300408

    https://f30.bimmerpost.com/forums/showthread.php?t=886019

    https://www.bimmerfest.com/forums/showthread.php?t=1147793

    https://www.2addicts.com/forums/showthread.php?t=984448
     
  8. Illsic_Design

    Illsic_Design Well-Known Member

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    Warm air is what fogs the windows, you want cool air hitting the windows so they don't fog
     
  9. OP
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    jojormot

    jojormot New Member

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    Not really. The AC is what helps take the moisture out of the air. If the AC is on, it'll blow dry air whether the air is warm or cold.
     
  10. JasonO

    JasonO Well-Known Member

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    The colder the air, the drier it will typically be in most ac designs I am familiar with.
     
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