SOME 2016-2017 EXPEDITION AND NAVIGATOR VEHICLES BUILT ON OR BEFORE 08/12/2016 AND 2016 F150 VEHICLES BUILT ON OR BEFORE 08/09/2016 EQUIPPED WITH SIRIUS SATELLITE RADIO MAY EXHIBIT AN INTERMITTENT CONCERN WHERE THE AUDIO CUTS OUT AND THE RADIO DISPLAYS A NO SIGNAL MESSAGE WHILE DRIVING IN OPEN SKY CONDITIONS IN CERTAIN LOCATIONS IN YOUR AREA. THIS MAY BE DUE TO INTERFERENCE WITH CELLULAR PHONE TOWER SIGNALS. IF A VEHICLE DISPLAYS THIS CONDITION NEAR CELLULAR PHONE TOWERS, REPLACE THE AUDIO UNIT ANTENNA WITH PART NUMBER GL1Z-10E893-AC ON EXPEDITION/NAVIGATOR AND HL3Z-10E893-AA FOR F150. REFER TO WORKSHOP MANUAL(WSM), SECTION 415-00 FOR REMOVAL AND INSTALLATION INSTRUCTIONS. USE APPLICABLE LABOR OPERATION(S)IN THE SLTS MANUAL SECTION 11.
