1996 Ford Crown Victoria Owner's Manual - Page 272

Because your vehicle's engine is electronically controlled by a computer, some control conditions are maintained by power from the battery. If you ever disconnect the battery or install a new battery, you must allow the computer to "relearn" its idle conditions before your vehicle will drive properly. To let the engine do this, put the gearshift in P (Park), turn off all the accessories, and start the vehicle. Let the engine idle for at least one minute. (Engine must be warm in order to "learn.") Also, allow approximately 10 miles (16 km) of stop and go traffic for your vehicle's engine to completely "relearn" its idle. Windshield Washer Fluid and Wipers Washer Fluid Check the level of the windshield washer fluid periodically, or when the optional lamp indicates low fluid. The reservoir for washer fluid is located on the driver's side of the engine compartment. Visual inspection can determine if the washer fluid is adequate. Do not operate the washer when the reservoir is empty. 256