2008 Chevrolet Impala Owner's Manual - Page 141

Instrument Panel Brightness D (Instrument Panel Brightness): The knob with this symbol on it is located next to the exterior lamps control. Push the knob in all the way until it extends out and then turn the knob clockwise to brighten or counterclockwise to dim the lights. Push the knob back in when finished. Entry Lighting Your vehicle may have courtesy lamps that will come on and stay on for a set time whenever the unlock symbol is pressed on the Remote Keyless Entry (RKE) Transmitter, if the vehicle has one. If a door is opened, the lamps stay on while it is open and then turn off automatically about 25 seconds after the door is closed. If the unlock symbol is pressed and you do not open a door, the lamps turn off after about 20 seconds. Entry lighting includes a feature called theater dimming. With theater dimming, the lamps do not turn off at the end of the delay time. Instead, they slowly dim after the delay time until they go out. The delay time is canceled if you turn the ignition key to ON/RUN or press the power door lock switch. The lamps will dim right away. When the ignition is on, illuminated entry is inactive, which means the courtesy lamps will not come on unless a door is opened. Courtesy Lamps When a door is opened, the courtesy lamps automatically come on. They make it easy for you to enter and leave your vehicle. You can also manually turn these lamps on by fully turning the instrument panel brightness control clockwise. The reading lamps, located on the rearview mirror, can be turned on or off independent of the automatic courtesy lamps, when the doors are closed. Dome Lamp The dome lamp will come on when you open a door. You can also turn this lamp on by turning the instrument panel brightness control clockwise. 3-17