So, interesting data point for those of you on TeslaFi. When I received 48.12.1 a couple of weeks ago, I noticed that the day before the update, my car refused to go to sleep for about 5.5 hours. Nothing I did would make the car sleep, even setting TeslaFi sleep attempts to start after 1 minute of idling. I assumed it was a bug with 46.2 that I was on at the time. Fast forward to yesterday, the car did it again. It idled and refused to sleep for about 5.5 hours. What happens today? Yup, you guessed it, 2018.50 arrives.
So now I think I might at least have about a 24 hour warning when I'm about to get an update, but I haven't had TeslaFi long enough to prove this out. I'm left wondering what the car could possibly be doing the day before that forces it to stay awake. Has anyone else noticed this? Note that when this has happened, the car is sitting idle on LTE, not WiFi. I then can see on my router that the update downloads the next day, minutes before I get the update notification.