2007 Chevrolet Impala Owner's Manual - Page 161
2007 Chevrolet Impala Manual
Page 161 highlights
When it is dark enough outside, your low-beam headlamps will turn off and the headlamps and parking lamps will turn on. The other lamps that come on with the headlamps will also come on. When it is bright enough outside, the headlamps will go off and the DRL will come on. As with any vehicle, you should turn on the regular headlamp system when you need it. When the headlamps are changed to high-beam, the fog lamps also go off. Some localities have laws that require the headlamps to be on along with the fog lamps. Instrument Panel Brightness D (Instrument Panel Brightness): The knob with this symbol on it is located next to the exterior lamps control. Press the knob until it pops out and then turn the knob clockwise to brighten or counterclockwise to dim the lights. Fog Lamps - (Fog Lamps): If your vehicle has fog lamps, the control is located on the exterior lamps control. The exterior lamps control is located on the instrument panel to the left of the steering column. Your ignition must be in the RUN position for the fog lamps to come on. To turn the fog lamps on, press the exterior lamps button. A light will come on in the instrument panel cluster to let you know that the fog lamps are on. Press the exterior lamps button again to turn the fog lamps off. 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 turning the instrument panel brightness control clockwise all the way. 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. 161