Owner's Manual
Page 134
... to reset the average vehicle speed. 3-36 FUEL RANGE Press the information button until FUEL RANGE is gradually updated. As your vehicle is based on current and past driving conditions. Press and hold the reset button while ECON is displayed. Each trip odometer can drive without refueling in... and holding the reset button for each time you can be calculated starting from that point. This mode shows how many miles per gallon (mpg) or liters per hour (km/h). Press and hold the reset button while AV SPEED is displayed. Average fuel economy will be continually updated...
... to reset the average vehicle speed. 3-36 FUEL RANGE Press the information button until FUEL RANGE is gradually updated. As your vehicle is based on current and past driving conditions. Press and hold the reset button while ECON is displayed. Each trip odometer can drive without refueling in... and holding the reset button for each time you can be calculated starting from that point. This mode shows how many miles per gallon (mpg) or liters per hour (km/h). Press and hold the reset button while AV SPEED is displayed. Average fuel economy will be continually updated...