Put on XM before you stop the car. Then do remote precondition. Open the door and start the car right away before the dashboard animation disappears. There's a bug that prevents XM from working.
Trial are 3 moths AFAIK. After that, you will only have channel 1.
"SiriusXM pays about $1 billion a year in subsidies and revenue splits to automakers, and according to the company, 75 percent of all new vehicles sold in the United States come with satellite radio installed. (It works with every major carmaker.) Of the 29.6 million subscribers to SiriusXM at the end of last year, 24.2 million paid the $11 to $20 monthly fee themselves, with the rest covered through promotions by car companies."
https://www.nytimes.com/2016/02/21/...inate-the-dashboard-of-the-connected-car.html
Not if you pay, and at way less cost than what XM wants, since I can play it in the car, directly on my phone wherever I am, on my smart TV/stereo/Blu-Ray, my Amazon Echos, etc., where XM wants $20+/month to use it anywhere but the car... Of course that depends on you having a 4G signal wherever you're driving. But that's why Pandora keeps "offline stations".Sure, I could use Pandora on my phone, but that has commercials also.