Good news, bad news... The good news is that Ford is aware of a problem, bad news, no fix yet. There is a SSM on it. SSM #19787 - "2007 EXPEDITION/NAVIGATORS - ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) HEAD ERRATIC OR INOPERATIVE DUE TO CELL PHONE CHARGING. - Some 2007 Expediton and Navigator vehicles may exhibit an erratic or inoperative EATC control head and/or intermittently inoperative blower motor. If the condition cannot be duplicated, ask the customer if they plug a cell phone charger into the IP power point. If so, try to duplicate the concern engine running, EATC on and cell phone charger plugged in for at least 1/2 hour. If concern is duplicated, please document the type of phone used. Please submit a global concern report through the PTS website. Advise customer to use the auxiliary power point in the rear of the center console or try a new charger. Monitor OASIS for updates."