Good Day All Just acquired a 24K 2011 Ranger XLT 4x4 with a Sirius radio. I'm trying to retrieve the ESN number for my records. The Sirius pamphlet that came with the vehicle says to tune the Radio to Sirius radio mode (the display says SAT FAULT) then to simultaneously press and hold the AUX and Preset #1 button. When I do this, the display blinks but no ID is displayed, just SAT FAULT. The pamphlet has no info on problems. A quick check of web did not yield any clues either. Any thoughts? Thanks to all who respond. Omni