Command radio system not communicating with car

Hi there. So it is as if my radio doesn’t realize that the engine is running. Sometimes it won’t turn on at all but when I do get it to turn on it only stays on for 30 minutes and then tells me that “command will shut down unless you start your engine “ or something to that effect and then every 30 minutes it shuts off until I turn it back on. Other time it turns on and off continuously until I turn off the car. When it is doing this or not turning on at all I usually disconnect the battery (negative terminal) for half a minute or so and then reconnect it and the radio turn on. Even still it will only stay on for half hour segments though. What could this be? I have checked all related fuses and they are all fine. Maybe a system update or something? I have no idea but I can’t stand driving without music! Haha please help!