I have a 2020 limited with 12 inch ucon... every 3 or 5 vehicle starts there is no sound. I tried changing am to fm to xm to etc. The turn off open the door. Deleted the Bluetooth phone history. Reset the ucon several times through the menu.. The back of steering wheel change source. The only remedy that works is to disconnect the battery. I have not been able to find the a pattern. Do anybody have something that I have not tried? This is really upsetting.