2007 Chevrolet Cobalt Owner's Manual - Page 151

Dome Lamp Your vehicle may have a dome lamp. Mirror Reading Lamps Your vehicle may have reading lamps on the rearview mirror. Push the button to turn the reading lamps on and off. 9 (Off): Move the lever to this position to turn the lamp off, even when a door is opened. 1 (Door): Move the lever to this position to turn the lamp on whenever a door is opened. Electric Power Management This vehicle has Electric Power Management (EPM), an advanced control system. It estimates the battery's temperature and state of charge and then adjusts the voltage for best performance and extended life of the battery. When the battery's state of charge is low, the voltage is raised slightly to quickly put the charge back in. When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gage or voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal. If there is a problem, an alert will be displayed. + (On): Move the lever to this position to turn the dome lamp on. Entry/Exit Lighting The lamps inside your vehicle will go on when you open any door. These lamps will fade out after about 20 seconds after all of the doors have been closed or when the ignition is turned on. These lamps will also go on when you press the trunk release, unlock symbol button or the horn symbol on the keyless entry system transmitter. The lamps inside your vehicle will stay on for about 20 seconds after your key is removed from the ignition to provide an illuminated exit. 151