Both my 2-drive empegs suffer the same problem. It all started happening about 8 months ago. I don't know if it was tied to software upgrade or not. I have a relatively new car, new Optima yellow-top battery, and I am absolutely positive it is not related to voltage (13.4 volts according to tester). I have learned to live with the delay and battery icon, but I'm awfully curious as to why it happens.