The Guardian services only work for me if I have used the truck recently. I spent some time with the Sirius tech support and they can get everything working as long as the truck has been used within an hour or so. It seems that something in the truck is going to sleep and will not let the command go through. I can stand beside the truck (no key fob) with my iPhone and enter a command. The dash will light up with the step on brake and push button, and the 12” screen will come on but stay dark. The Uconnect app will say the command was recdive, but it is not executed. If I start the truck and drive around a few minutes, everything will work, but only for a short period of time. According to Sirius the entire radio will have to be replaced. I’m a little uneasy about this because I don’t have any other issues with the radio / nav system. Has anyone had this problem and fixed it without a new radio?