After updating to 3.3.9 yesterday and seeing one "Key Fob Not Detected" message for the day, this morning I saw the message again.
However, the message was immediately followed by the "Fob Battery Low. Please Change".
The battery message today reminded me that I had seen that same message a few days earlier, so I'm not convinced the fob detection message yesterday after the update was related to updating versus the battery level.
New battery installed, so we'll see what happens with detection messages in the coming days.
One change I notice with the update is that if I exit and lock the car, then return within a few minutes, the screens stay black for about 10 seconds and then come on.
Wasn't happening with 3.3.5.
Seat and steering wheel adjust, but screens take longer to come on.
However, if the car is locked for just over 5 minutes, less than 10, the screens are fine.
I recall someone posting about the sleep phases of the car.
It's as if the car is starting to go into a deeper sleep, but if that is interrupted, it takes awhile to wake back up versus waking up from a deeper sleep.
Deep sleep and memory leaks.
The Gravity is a newborn that needs long naps and frequent diaper changes.
First gen aka a baby!