Climate controls turn on randomly

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2009CAZ4
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Climate controls turn on randomly

Post by 2009CAZ4 » Fri Aug 10, 2018 5:03 pm

Hello all

2009 z4 3.5i auto
50k miles

The weather here in southern california is hot but not that bad so I often just drive with the top up and windows down. I will get in the car and press fan-down until the climate controls turn off. Sometimes the system randomly turns back on ~3-5 minutes later and I have to turn it off again. Strikes me that this must be some kind of glitch.

Does this ring a bell to anyone else?

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Smartbear
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Climate controls turn on randomly

Post by Smartbear » Fri Aug 10, 2018 5:32 pm

2009CAZ4 wrote:
Fri Aug 10, 2018 5:03 pm
Hello all

2009 z4 3.5i auto
50k miles

The weather here in southern california is hot but not that bad so I often just drive with the top up and windows down. I will get in the car and press fan-down until the climate controls turn off. Sometimes the system randomly turns back on ~3-5 minutes later and I have to turn it off again. Strikes me that this must be some kind of glitch.

Does this ring a bell to anyone else?
Have you got it set on auto?
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2009CAZ4
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Climate controls turn on randomly

Post by 2009CAZ4 » Fri Aug 10, 2018 5:35 pm

I believe it will be set on auto, then I turn the fan speed to off.

logically it should take that as a sign that I don't want it back on.

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Chris_D
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Climate controls turn on randomly

Post by Chris_D » Fri Aug 10, 2018 6:03 pm

Maybe it's a wind-up?
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djstan
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Climate controls turn on randomly

Post by djstan » Fri Aug 10, 2018 6:07 pm

Forgive my ignorance, but what's wrong with having the ventilation on? You can switch the AC off after all...
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2009CAZ4
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Climate controls turn on randomly

Post by 2009CAZ4 » Sat Aug 11, 2018 1:56 am

Force of habit, seems kind of weird to drive with all the windows down and the fans on

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Climate controls turn on randomly

Post by Maniac » Sat Aug 11, 2018 6:52 am

Two options,

1) Failing Battery (common in creating glitches)
2) Failing A/C control switches (has control electronics built in)

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Nictrix
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Climate controls turn on randomly

Post by Nictrix » Sat Aug 11, 2018 11:10 am

2009CAZ4 wrote:
Sat Aug 11, 2018 1:56 am
Force of habit, seems kind of weird to drive with all the windows down and the fans on
Its the opposite for me, its a habit to always have air coming in to the car aimed at the screen mostly to help keep it clear.
E89 2010 23i M Sport Black with Black leather

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