2011 Honda Accord Owner's Manual - Page 215
2011 Honda Accord Manual
Page 215 highlights
Playing the XM Radio (Models with navigation system) The XM satellites are in orbit over the equator; therefore, objects south of the vehicle may cause satellite reception interruptions. To help compensate for this, ground-based repeaters are placed in major metropolitan areas. Satellite signals are more likely to be blocked by tall buildings and mountains the farther north you travel from the equator. Depending on where you drive, you may experience reception problems. Interference can be caused by any of these conditions: Driving on the north side of an east/west mountain road. Driving on the north side of a large commercial truck on an east/west road. GROUND REPEATER Signal may be blocked by mountains or large obstacles to the south. Signal weaker in these areas. SATELLITE Driving in tunnels. 212 2011 Accord Sedan