1998 Ford Crown Victoria Owner's Manual - Page 20
1998 Ford Crown Victoria Manual
Page 20 highlights
Instrumentation Press the RESET control while AVG ECON is displayed to reset the function. The average displayed is the average since the last reset. RESET E/M SELECT INST ECON (instantaneous fuel economy) Select this function to calculate the DIST TO AVG INST EMPTY ECON ECON instantaneous fuel economy of your TRIP TRIP AVG running vehicle. For example, you A B SPEED can see what your fuel economy is in heavy traffic or on an open highway. Your vehicle must be moving to calculate instantaneous fuel economy. When your vehicle is not moving, instantaneous fuel economy is displayed at 99 liters per 100 kilometers (or 0 miles per gallon). Instantaneous fuel economy cannot be reset. TRIP A and TRIP B These two functions allow you to see how far you have traveled since you last reset. Trip A and Trip B are completely independent and must be reset individually. To reset either trip feature to zero, press the RESET control while the appropriate trip distance feature (TRIP A or TRIP B) is displayed. DIST TO EMPTY TRIP A AVG ECON TRIP B INST ECON AVG SPEED RESET E/M SELECT 20