2004 Cadillac CTS Owner's Manual - Page 185

Battery Voltage Low This symbol appears with the Battery Voltage Low message. The normal battery voltage range is 11.5 to 15.5 volts. You can monitor battery voltage on the DIC by pressing the INFO button until you find BATTERY VOLTS (Base audio system) or by selecting Battery Voltage from the Vehicle Information menu (Navigation system). Change Engine Oil This symbol appears with the Change Engine Oil message. This message will appear when the electrical system is charging less than 10 volts or if the battery has been drained. If this message appears immediately after starting the engine, it is possible that the generator can still recharge the battery. The battery should recharge while driving but may take a few hours to do so. Consider using an auxiliary charger (be sure to follow the manufacturer's instructions) to boost the battery after returning home or to a final destination. If this message appears while driving or after starting your vehicle and stays on, have it checked immediately to determine the cause of this problem. To help the generator recharge the battery quickly, you can reduce the load on the electrical system by turning off the accessories. This message indicates that the life of the engine oil has expired and it should be changed within 200 miles. See Engine Oil on page 5-16 and Recommended Fluids and Lubricants on page 6-13 for more information. When you reset the Change Engine Oil message by clearing it from the display, you still must reset the engine oil life monitor separately. For more information on resetting the engine oil life monitor, see Engine Oil on page 5-16. 3-63