Originally Posted by Slo86GT
On the automatic climate control the A/C indicator specifically says "OFF" when defrost is chosen. The OP is probably just stating that defrost is still running the A/C even though all indications say no.
Pretty common knowledge that anytime the Defroster selection is made it means that the air is being run through the A/C system to dehumidify it.
Currently in my Ti, I leave the settings in manual with Feet and Windshield icons illuminated. The AC indicator in the digital readout never shows "ON", even though I hear the compressor cycle. The AC indicator on the Climate page of MFT does show "ON" in this situation.
If I cycle the AC button twice on the actual climate controls(not the touchscreen), it will show "ON" then "OFF", and the indicator in MFT will go out. I also do not hear the compressor cycle after doing this.
It reverts when shutting the car off.