2010 Ford Expedition EL Owner Guide 1st Printing (Spanish) - Page 538

Entertainment Systems Using headphones/Dual Play mode WARNING: Do not leave children unattended in the vehicle and do not let children operate the system while unsupervised. If wired headphones or auxiliary systems are used, children may become entangled in the cords and seriously injure themselves. Plug a 3.5 mm headphone (not included) into the jack. Press the speaker button, or the 2/4 preset buttons simultaneously on the radio to activate the headphones. The words DUAL PLAY will illuminate on the radio display, sound will no longer be heard from the rear speakers and the fade control will be disabled, signaling that Dual Play has been activated. The front speakers remain playing for the front passengers. Press the speaker button, or the 2/4 preset buttons simultaneously on the radio again to deactivate the headphones and dual play mode. The words SINGLE PLAY will illuminate on the radio display and fade control and sound from rear speakers will be restored, signaling that Dual Play mode has been deactivated. To use any rear controls, whether in single or dual play mode, the rear seat controls must be active. To enable Dual Play, the rear seat controls must be active and illuminated in the radio display. See To activate the rear seat radio controls previously. GENERAL AUDIO INFORMATION Radio frequencies: AM and FM frequencies are established by the Federal Communications Commission (FCC) and the Canadian Radio and Telecommunications Commission (CRTC). Those frequencies are: AM: 530, 540-1700, 1710 kHz FM: 87.7, 87.9-107.7, 107.9 MHz Radio reception factors: There are three factors that can affect radio reception: • Distance/strength: The further you travel from an FM station, the weaker the signal and the weaker the reception. • Terrain: Hills, mountains, tall buildings, power lines, electric fences, traffic lights and thunderstorms can interfere with your reception. • Station overload: When you pass a broadcast tower, a stronger signal may overtake a weaker one and play while the weak station frequency is displayed. 64 2010 Expedition (exd) Owners Guide (own2002), 1st Printing USA (fus)