I have encountered this once in a while when my car is parked and charging in my garage. The car seems to have entered a truly deep state of sleep. What dreams may come?
This mostly occurs when attempting to view the car using the iPhone app. If this occurs, I use my Samsung Fold 4 to open the Android app, and the car arouses from its slumber. I have not found the explanation why the Android app seems to awaken the car when the iPhone app says it’s offline.
However, I have turned the Bluetooth off and back on and close and reopen the iPhone app and the car comes back online with using the Android.