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Climate Control Question...little black button?

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Old Feb 28, 2014 | 08:56 PM
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Default Climate Control Question...little black button?

Hello...my car has 3-zone climate control. Right next to the fan control **** is a little black button (lower right side), at least it appears to be a button. Does anyone know what that's for? I also noticed it on the 4-zone climate control, but on those it's between the AC and OFF button. Can't find anything about it in the Owners Manual or Audi online tutorials. Just curious...thanks, Mark
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Old Mar 1, 2014 | 04:02 AM
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This gets asked from time to time. The consensus is it's a sensor for the cabin temperature.
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Old Mar 1, 2014 | 07:53 AM
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Originally Posted by snagitseven
This gets asked from time to time. The consensus is it's a sensor for the cabin temperature.
I don't pick mine up for a few weeks yet. check out page 47 of this manual. Is it the sun light photo sensor?
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Old Mar 1, 2014 | 11:14 AM
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Originally Posted by chawk
I don't pick mine up for a few weeks yet. check out page 47 of this manual. Is it the sun light photo sensor?
I always wondered why in Auto the side (between driver and passenger) that is getting more sunlight has the fan at a higher speed, I knew there was a sensor somewhere but I didn't know where
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Old Mar 5, 2014 | 12:54 PM
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Thanks for all your replies...on page 47 in that manual, I see that it's mentioned, but not pointed out.

Regardless, I'll trust the general consensus that it's some sort of light/temp sensor.

I was just curious...thanks, Mark
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Old Feb 27, 2017 | 03:22 PM
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Thanks for this guys. I just picked up my new A4 today and was puzzled by this as well. I thought it was a button but couldnt find anything in the manual. The manual labels everything on the climate unit but that!
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