1997 Buick Century Owner's Manual - Page 121

Delayed Exit Lighting This feature illuminates your vehicle's interior for a period of time after the ignition is removed from key the ignition. The vehicle's ignition must be off for Delayed Exit Lighting towork. When the ignition is removed, key interior illumination will activate remain on until: and 0 0 Rearview Mirror Reading Lamps (If Equipped) The ignition is turned to the RUN position. The power door locks are activated. An illumination period of 25 seconds has elapsed. 0 If during the illumination period a dooris opened, the timed illumination period will be canceled the and interior lampswill remain on since a door open. is Use the switch next to each lampto turn them on and off. Dome Lamp The domelamp will come on when you open the doors. 2-45