Hello everyone, new here and have a question about the XM Radio.

I bought the 2006 Scion xA in May and just got around checking into the XM radio out, and they are offering a 30 day trial. They told me to put in my information on their website, and Radio ID to start the trial process. I have the T1807 Radio, which says SAT Ready on it, and there is a XM radio antenna on the back of the of the car over the 5th door.

I have been trying to find the Radio ID, by hitting the SAT/AM button and tuning it down to Channel 0, but it only goes to 530 (clearly an AM channel). What am I doing wrong?

Before anyone mentions putting in the VIN number on their signup, I tried that on the XM signup and doesn't work.