2011 Chevrolet Volt Owner's Manual - Page 161

Instruments and Controls The Programmable Charging system will be disabled if the Charge Complete Time cannot be confidently estimated. If the Programmable Charging system is consistently disabled, see your dealer for details. Energy Usage 5-41 Energy Information To view the Energy Usage, Energy Efficiency, and Efficiency Tips, press the [ button on the center stack and then press the Energy Info button at the top of the touch screen. The Energy Usage screen displays information for the total of all the drive cycles since the last time the high voltage battery was fully charged. This includes distance traveled in Electric Mode, distance traveled in Extended Range Mode, total distance traveled, total fuel used, and average fuel economy. There are maximum limits to some of the values that can be displayed. When these values are replaced with dashes, the value limits have been reached. To reset these values, the high voltage battery will need to be fully recharged. The circle graph also represents the percentage of distance traveled using Electric Mode versus Extended Range Mode. The Lifetime Fuel Economy is a total over the life of the vehicle and can only be reset by the dealer.