2003 Chevrolet Corvette Owner's Manual - Page 126

You can open the doors manually using the knob next to the headlamp assembly. Turn the knob counterclockwise until the doors are open. Turn the knob clockwise to closethe doors manually. The headlamp doors should be open when driving in icy or snowy conditions to preventthe doors from freezing closed and when washing the vehicle to help clean the headlamps. The DRL system will make the front turn signal lamps come on when the following conditions are met: The ignition is on, the exterior lamp switch is off and 0 the parking brake is released. Notice: In order to avoid possible contact of the hood to the headlamp doors, either take care in raising the hood with the headlamps up, or turn off the headlamps prior to opening the hood. When the DRL are on, only the front turn signal lamps will be on. The headlamps, taillamps, sidemarker and other lamps won't be on. Your instrument panel won't be lit up either. To idle the vehicle with the DRL off, set the parking brake while the ignition is in OFF. Then start the vehicle. The DRL, headlamps and parking lamps will stay off until you release the parking brake. As with any vehicle, you should turn on the regular headlamp system when you need it. Daytime Running Lamps Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the shon periods after dawn and before sunset. Fully functional daytime running lamps are required on all vehicles first sold in Canada. 3-13