So I had a bit of a scare yesterday, and lo and behold, it seems I'm not alone with the A/C issue? I'm not sure if there's any commonality between what everyone has experienced (I'll take the time to comb through this thread more thoroughly before EOD), but here's what I've experienced:
Yesterday at around 08:00AM PST (in California), I'm waiting in my car with a few hours to kill and decided to take a nap. At around 10:00AM, I wake up completely drenched and nearly suffocating due to the heat. I'm nearly incoherent, and thought it was simply that hot outside...until I crack the window open, and immediately feel a (comparatively) cool draft come in. Confused, I double check and my A/C is certainly set to the coolest temperature setting (display shows Lo) and I'm not in Auto mode (fans are maxed, air is set to circulate and A/C is On via Climate screen). I look at the dash and I notice the temperature reading seems to be inaccurate; going through the system settings, I use the available option to offset the temperature reading by the maximum allowed value (+5°F), and
immediately the A/C kicks on and cools the car down. However, the effect seems to be only temporary and eventually I have to switch to
Fresh Air Mode just to bring in cool air to the cabin from outside. Shortly after that, I believe in one of my attempts to find out the root cause of the issue via the diagnostics menu or after I had rebooted the head unit, one of the sensors must have reset and immediately tripped the temperature protection feature to shutoff the cameras and etc due to excessive heat. And now, at present, the sensor readout seems to be hit-or-miss; I can't tell for certain but my speculation is that there's maybe a system process that — not immediately, but eventually — throws an error, causing related threads to hang (such as I/O stream for the sensor in question), which could explain the intermittency experienced. And as there was recently at least one OTA update that I happened to notice, my guess is this may be a software issue rather than hardware.
Just in case though, I make an attempt to locate the exact sensor in question, which if I'm not mistaken should be
this part. I found a diagram on Google...

...but I'm not sure if this is located in the engine bay or cabin interior (under dash cover)?
Wanted to see if anyone else has experienced anything similar and what the resolution method was, etc. I'll read through the thread when I'm able to, but I just wanted to post my experience up first in case it helps with narrowing down the cause.
PS: I didn't see anything out of the norm in diagnostics menu, except I did notice yesterday there was an error that isn't usually there, but going back today to take a picture it no longer shows any error present...

...It was the entry listed as "ST_SW_PAD", which according to the
Diagnostics Manual:
...indicates whether the specific data is properly received from the audio remote-HFL switch via the gauge control module
. Doesn't sound like it pertains to the issue here, but nothing else stood out aside from that.