mjeselnik

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

snagitseven

This gets asked from time to time. The consensus is it's a sensor for the cabin temperature.

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?

feralc

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

mjeselnik

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

deanclean

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!