Satellite radio ready just means the radio is capable of recieving signal, assuming you get the appropriate tuner and purchase the service. Factory installed radio on premium M is a bosch. As far as I know sat ready factory installed radios (and the Jensen add ons) have not came with a tuner for many years, and I could be wrong they may never have came with the tuner. Here is how it is stated on the cab description. " The satellite radio-ready feature makes it easy for customers to convert the sound system to any available service." Convert, would probably be the key word here. Now if the dealer gave you the impression that the sat service was connected and already had a tuner, then that is a different story, regardless I am sure you will be on your own regarding the subscription but maybe they can help out via the tuner but I think it may have to come from an outside source unless the Jensen tuner (SWXSV200B) will work. Myself, I am a cheapskate and use one of the portable units so that I only need 1 subscription and can use it anywhere. Good Luck