Owner's Manual
Page 185
... AV (Average) SPEED Press the information button until OIL LIFE displays. To reset the average vehicle speed, press and hold the reset button while MPG (L/100 KM) AVG is displayed. OIL LIFE Press the information button until AV SPEED displays. In addition to Reset the Engine Oil Life System... is reset after an oil change . It shows 100% when the system is recommended in the Maintenance Schedule in miles per gallon (mpg) or liters per hour (km/h). This mode shows the current fuel economy at a particular moment and changes frequently as driving conditions change...
... AV (Average) SPEED Press the information button until OIL LIFE displays. To reset the average vehicle speed, press and hold the reset button while MPG (L/100 KM) AVG is displayed. OIL LIFE Press the information button until AV SPEED displays. In addition to Reset the Engine Oil Life System... is reset after an oil change . It shows 100% when the system is recommended in the Maintenance Schedule in miles per gallon (mpg) or liters per hour (km/h). This mode shows the current fuel economy at a particular moment and changes frequently as driving conditions change...