Sirius radio not working – Pics

Ok so I finally got my new car (A4 1.8T Black on Black), I plan on taking some pics of her when the weather around here gets better. My dilemma right now is I can’t get my Sirius radio to work. I was playing around in my trunk today and pulled open the compartment that holds the satellite radio and to my surprise found a Sirius unit (I had just figured I didn’t have it since my SAT button did nothing for me). I checked all the wiring on the satellite unit and they are all plugged in nice and firm. I have a feeling it may be something behind the head unit but I won’t know until I can get a hold of some tools to pull the unit out. When I do press the “SAT” button the FM radio stays on and it just says “RDS OFF” anyone have any ideas? Thank you for any help.