Over the weekend we had very high temperatures in NYC, upper 90s. While driving the AC in my X seemed to die. Only hot air blowing from the vents, no matter what the temperature setting (I had plenty of charge and Range Mode was off). On my way home it was hitting 110 degrees in the cabin. I made an SC appointment for today. On my way driving over today it seemed like the AC might be working a tiny bit, but after about 20 minutes of driving seemed to blow ambient temperature air, no matter what the setting. Either it worked barely for 20 minutes, or it was an illusion because the car was cool (I park underground). The SC is great, handles the parking brake recall, rebadges my car to the upgraded 75D (had upgraded that a month ago), apparently does a software update (according my phone notifications), but can't reproduce the AC issue. They say it's blowing cold air. Remotely I verify this: the app shows the cabin at about 79 degrees, I turn on the AC and see the temperature drop to 68 in the course of a few minutes. So, either I had a weird software issue that the update solved, or I've got an AC issue that manifests after driving for a little while. SC is keeping the car overnight and will try driving a bit tomorrow and see if the issue can be reproduced. Has anyone else experienced an issue like this? I'm stumped!