Not sure where to post this... so here it goes. Just noticed while detailing the car with door open and climate on - that when the AC powers up, I not only hear the usual sounds associated with this sort of unit, but a slight grinding noise. This is easy to hear outside the car. Putting my head into the wheel well on pax side makes it clearer. It almost sounds as if a metal fan blade is chaffing on another piece of metal - or something that got ingested into the fan. (if that's even possible) It is not a whine (like heard on Teslatap), but is as noted above. Can't imaging this is normal, but don't want to panic either as my nearest SC is Charlotte... Thanks!