1998 Ford Expedition Owner Guide 1st Printing - Page 169

Maintenance and care cleaning them, and apply a small quantity of grease to the top of each battery terminal to help prevent corrosion. If your battery has a cover/shield, make sure it is reinstalled after the battery is replaced. Because your vehicle's engine is electronically controlled by a computer, some control conditions are maintained by power from the battery. When the battery is disconnected or a new battery is installed, the engine must relearn its idle conditions before your vehicle will drive properly. To begin this process: 1. Put the gearshift in P (Park), turn off all accessories and start the vehicle. 2. Let the engine idle for at least one minute. 3. The relearning process will automatically complete as you drive the vehicle. • If you do not allow the engine to relearn its idle, the idle quality of your vehicle may be adversely affected until the idle is eventually relearned. • If the battery has been disconnected or a new battery has been installed, the clock and the preset radio stations must be reset once the battery is reconnected. 169