Hello, i have a nissan maxima 2006 3.2 SL. and there is a button called "Sat" when i push it i get a message says No Sat. so i called Sirius Radio and they kept telling me to push sat and go to channel 0. but when i press Sat i get message says no sat instead of choosing channel number. Sirus and nissan dealer customer service couldnt help me with it.... so i dont know what to do.... what am i missing?