My old Sportster4 was needing to be replaced. Presets 1-6 didn't work, and neither did the arrows to scroll side to side through channel categories. Off to eBay I went. Ended up getting a Sportster5 (which I figured had all the wiring, but didn't; not a big deal because all my old stuff worked). I plugged everything up before even calling Sirius to activate the radio just so I could confirm that all the buttons functioned and it powered up. To my surprise -- FULL TUNAGE!!! So, I wonder if the previous owner may have done a lifetime subscription, or what? Who knows, but I hope that's the case as my subscription is set to expire in January. I like free stuff, and I only paid $32 for the radio that retails for $150.