Black plate (126,1)Cadillac STS Owner Manual - 2011XM™ Satellite Radio ServiceXM Satellite Radio Service gives digital radio receptionfrom coast-to-coast in the 48 contiguous United States,and in Canada. Just as with FM, tall buildings or hillscan interfere with satellite radio signals, causing thesound to fade in and out. In addition, traveling orstanding under heavy foliage, bridges, garages,or tunnels may cause loss of the XM signal for aperiod of time.Cellular Phone UsageCellular phone usage may cause interference withthe vehicle's radio. This interference may occurwhen making or receiving phone calls, charging thephone's battery, or simply having the phone on. Thisinterference causes an increased level of static whilelistening to the radio. If static is received while listeningto the radio, unplug the cellular phone and turn it off.Backglass AntennaThe AM-FM antenna is integrated with the rear windowdefogger, located in the rear window. Make sure that theinside surface of the rear window is not scratched andthat the lines on the glass are not damaged. If theinside surface is damaged, it could interfere with radioreception. For proper radio reception, the antennaconnector needs to be properly attached to the post onthe glass.If a cellular telephone antenna needs to be attached tothe glass, make sure that the grid lines for the AM-FMantenna are not damaged. There is enough spacebetween the grid lines to attach a cellular telephoneantenna without interfering with radio reception.Notice: Using a razor blade or sharp object to clearthe inside rear window can damage the rear windowantenna and/or the rear window defogger. Repairswould not be covered by the vehicle warranty. Donot clear the inside rear window with sharp objects.Notice: Do not apply aftermarket glass tintingwith metallic film. The metallic film in some tintingmaterials will interfere with or distort the incomingradio reception. Any damage caused to yourbackglass antenna due to metallic tinting materialswill not be covered by the vehicle warranty.XM™ Satellite Radio AntennaSystemThe XM Satellite Radio antenna is located on the roofor the rear of the vehicle. Keep the antenna clear ofobstructions for clear radio reception.4-126