When you buy the car you should call sirrius radio yourself and enter that day as day 1 . Some dealers don’t forward that info and the I service date for your vehicle is day 1 from when the radio is active . Cancelling your service is on you and your radio has id number , they have your info on radio trials , activations , cancellations . And the radio goes into limp mode , as they say , and stays there until you register for a new subscription or enable a trail period based option. It’s simple , you either use it or lose it , and nothing pops on screen I always your on the active or non active sirrius screen from uconnect .