2013 Chevrolet Volt Owner Manual - Page 124

5-18 Instruments and Controls Charging System Light (12-Volt Battery) Malfunction Indicator Lamp A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the vehicle. It ensures that emissions are at acceptable levels for the life of the vehicle, helping to maintain a clean environment. The malfunction indicator lamp comes on when the vehicle is placed in Service Only Mode, as a check to show it is working. If it does not, have the vehicle serviced by your dealer. See Power Button on page 9‑16 for more information. OBD II system has detected a problem and diagnosis and service might be required. Malfunctions often are indicated by the system before any problem is apparent. Being aware of the light can prevent more serious damage to the vehicle. This system also assists the dealer technician in correctly diagnosing any malfunction. Notice: If the vehicle is continually driven with this light on, the emission controls might not work as well, the vehicle fuel economy might not be as good, and the engine might not run as smoothly. This could lead to costly repairs that might not be covered by the vehicle warranty. Notice: Modifications made to the engine, electric drive unit, exhaust, intake, or fuel system of the vehicle or the replacement of the original tires with other than The charging system light comes on briefly when the vehicle is in ON/RUN, as a check to show the light is working. If the light stays on, or comes on while driving, there could be a problem with the electrical charging system. Have it checked by your dealer. Driving while this light is on could drain the 12‐volt battery. If a short distance must be driven with the light on, be sure to turn off all accessories, such as the radio. If the malfunction indicator lamp comes on, while the engine is in ON/RUN, this indicates that the