2013 Chevrolet Volt Owner Manual - Page 208

9-22 Driving and Operating In either Electric Mode or Extended Range Mode, when the hood is open, the engine will run without turning off if the vehicle is on. The high voltage battery is neither charged nor discharged when this occurs. In either Electric Mode or Extended Range Mode, if there is a high voltage battery fault, the engine may run without turning off to generate needed electricity. The malfunction indicator lamp will turn on. See Malfunction Indicator Lamp on page 5‑18. Extended Range Mode When the vehicle reaches the end of its electric range, it switches to Extended Range Mode (ERM). In this secondary mode, electricity is produced by the fuel‐powered engine. This secondary source of electric power extends the vehicle range. Operation will continue in ERM until the vehicle can be plugged in to recharge the high voltage battery and restore Electric Mode. The high voltage battery will continue to provide some power and work together with the engine to provide peak performance when it is required, such as driving up a steep incline or for high acceleration maneuvers. The battery will not be charged nor will electric vehicle range be restored by the engine. Driver Selected Operating Modes While driving in Electric or Extended Range Mode, additional operating modes can be selected. Press the DRIVE MODE button to display selectable drive modes in the Driver Information Center (DIC). Continue pressing to scroll through the modes.