Found this today on Reddit/TeslaModelY:
Tesla Model Y • r/TeslaModelY
PSA: Tesla changed from "only fix when customer complains" to doing a full wide stealthy recall for the 2020/2021 3/Y. The A/C sensors are going bad so if you think you have any problems with A/C - you know what to do. Make an apt or ask Tesla during your service appointment
The PSA is NOT from Tesla, but from @greentheonly. He wrote that Tesla is "doing a full wide stealthy recall..."
The Reddit post contains an image of the Tesla Service Bulletin, advising techs when/how to replace components in HVAC systems that have failed.
Greentheonly's use of the term "recall" is unfortunate, because there IS NO RECALL. A Service Bulletin isn't a recall.
HVAC systems are failing, for sure. There's no denying that. The issue is being addressed by Tesla, but doesn't appear to be proactive, but reactive.