Clearing Codes: Notes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford RV Cutaway, 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, and 2003 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT disconnect vehicle battery to clear DTCs. This will erase operating information from Keep-Alive Random Access Memory (RAM). To clear keep alive RAM, perform KEEP ALIVE RANDOM ACCESS MEMORY RESET PROCEDURE .