1997 Buick Regal Owner's Manual - Page 119

Twilight Sentinel Twilight Sentinel provides a period of exterior illumination as you leave the vicinity of your vehicle. The feature is activatedwhen your vehicle's headlamps are on due the automatic headlamp control feature to described previously in this section, and whenyour vehicle's ignition is turnedoff. Your headlamps will then remain on until the headlamp switch is moved from OFF to the parklamp position or until a 90 second illumination period has elapsed. If you turn off the ignition with the headlamp switch in the parklamp or headlamp position, the Twilight Sentinel cycle will not occur. Press and hold the power door lock switch. While holding the door lock switch, cycle the headlamp switch on and then off two times. Release the power door lock switch. These operationsmust be carried out in a time period of less than 10 seconds, followedby a delay period of no more than 10 seconds. Then, press and hold the power door unlock switch. Whileholding the door unlock switch, cycle the headlamp switch on and then off two times. Release thecourtesy door unlock switch. These operations must be carried out in a time period of less than 10 seconds. After releasing the door unlock switch, a single chime will be heard if the Twilight Sentinel function has been disabled; two chimes will be heard if the feature has been enabled. This featurewill be enabled when your vehicle is shipped from the factory. Disconnecting the vehicle's battery for up to a year will not change the programmed operationof this feature. You can customize the vehicle to activate Twilight the Sentinel when your vehicle's ignition is turned off under the conditions described above, you may choose not or to activate this feature under any conditions.The enabledldisabled stateof this featurewill be toggled when you perform the following sequence with the doors closed and the ignition in the RUN position: key 2-43