Push AC button and nothing happens. Push the Auto button and it comes on.

Discussion in 'Prius c Technical Discussion' started by tnt4him, May 22, 2017.

  1. tnt4him

    tnt4him Junior Member

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    Finally some hot weather. My wife comes home and says the AC is not working in the Prius. So I go out to the garage and turn the car on. Push the AC button and nothing happens. I push the auto button and it turns on then off (the green lights) Then I push and hold the auto button and the AC comes on but goes off if I let go. I repeat this several times until the car gets nice and cold. Then I let go of the auto button and it stays on. I cycle through on off auto and everything appears to be working but for awhile AC did not work but auto did. Is it the control panel or a sensor? Any ideas? 2012 prius c 28k/
     
  2. bisco

    bisco cookie crumbler

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    did you turn the fan on before pressing a/c? is the temp set to 'low'?
     
  3. vincent1449p

    vincent1449p Active Member

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    Hi tnt4him,

    Many of us have this problem too. The Fan [OFF] button gets stuck when you press it down sometimes. If you pressed the button repeatedly, it should get back to normal operation.

    Vincent
     
    #3 vincent1449p, May 23, 2017
    Last edited: May 23, 2017
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  4. AliIzad

    AliIzad Member

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    Yes! I had the same issue before I finally figured out the OFF button was stuck.
     
  5. Sean Nelson

    Sean Nelson Active Member

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    I just had the same thing happen to me a few days ago. You just have to push the "OFF" button while wiggling your fingertip around to free the button from being tucked under the plastic that surrounds it. A bit annoying, but trivial to fix once you figure it out.
     
  6. tnt4him

    tnt4him Junior Member

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    Thanks everyone for your responses. The off button, son of a gun. Its always a relief to know why. Thanks a million.
     
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  7. bisco

    bisco cookie crumbler

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    if the off button is stuck, why does auto work?
     
  8. Sean Nelson

    Sean Nelson Active Member

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    When you push the AUTO button the green light comes on, but then it goes back out again almost immediately.
     
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  9. everdave

    everdave New Member

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    I always turn the ac off before I shut down and when I start I always hit fan up button and the ac comes on. I think that is normal.
     
  10. Arsal

    Arsal New Member

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    Its not working o mean in my prius ac button green light is not turning on so suggest me some better
     
  11. Oldwolf

    Oldwolf Prius Enthusiast

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    My OFF button sticks occasionally, as well. I guess there is no fix but replace the switch?
    Looks like the button assembly pops off, maybe some cleaning is needed.
     
  12. frenzee

    frenzee Member

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    I had this happen too, especially on hot days. Plastic-safe lubricant will solve or at least minimze the problem. I recommend Deoxit Fader F-Series, which is specifically made for plastic-to-plastic contact surfaces. Teflon or silicone based dry lubricant will also work. Don't spray directly onto the OFF switch. Use a Q-tip or toothpick. Don't use WD-40 or anything with solvents or oils in it. That will make it worse.
     
  13. dig4dirt

    dig4dirt MoonGlow

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    It has to be a defective or poor quality switch/button combo
    Im sure toyota is well aware of it.

    On my 2012c I remember it happening and buying my 2014c I new of the problem
    and it pretty much happened from the start.

    Never got either of the switch/buttons dirty,

    Since I am aware I just know to look for it now.
     
  14. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Thanks! I haven’t had this problem yet, nor had I run across this product. I’m a big fan of Caig’s other Deoxit products, really saved my bacon a number of times.

    Engineering & manufacturing quality buttons that fit and work for decades in the conditions of a car cabin is difficult and expensive. This is part of why Tesla skipped it and went straight to a touchscreen.
     
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