Same thing is happening to me, just started a couple days ago. What update are you on? I was using the Samsung T7 500 GB and now am trying the ScanDisk Extreme Pro SSD. Both appear to only become unavailable after an over night sleep cycle. During the day in and out of the car does not seem to be an issue. I can confirm sentry still works, this is specifically related to the dash cam. Have you figured anything out? I have a mobile service appointment on Friday and have added it to my list of items that I want addressed. let me know if you figure anything out in the mean time.