2009 Chevrolet Impala Owner's Manual - Page 137
2009 Chevrolet Impala Manual
Page 137 highlights
Instrument Panel Brightness The knob with this symbol on it is located next to the exterior lamps control to the left of the steering wheel. Push the knob in all the way until it extends out and then turn the knob clockwise or counterclockwise to brighten or dim the lights. Push the knob back in when finished. Entry Lighting For vehicles with courtesy lamps, they 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 20 seconds after the door is closed. If the unlock symbol is pressed and no door is opened, 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 and then go out. The delay time is canceled if the ignition key is turned to ON/RUN or the power door lock switch is pressed. 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. D (Instrument Panel Brightness): 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 comes on when a door is opened. This lamp can also be turned on by turning the instrument panel brightness control clockwise. 3-15