1997 Cadillac Seville Owner's Manual - Page 111

The illuminated entry system turns on courtesy the lamps and the backlighting to the door switches and to the lamp controlknob when a door isopened or if you press a R E transmitter button. Sincethe illuminated entry system has a photocell, this means that it must be dark outside in order for the courtesy lamps or backlighting to turn on. The courtesy lamps turn off approximately 20 seconds after the last door is closed or after the ignitionkey is placed in the ignition. 3 of This feature prohibits the dimming the instrument panel lights during daylightwhile the headlamps are on. This feature operates with the light sensor for the twilight sentinel and is fully automatic.When the light sensor reads darkness outside, the instrument panel lights can be adjusted. Backlightingto the instrument panel will also turn on. The reading lamps are located in the roof. These lamps and the interior courtesy lamps come on when any door is opened and it is dark outside. Press the button to t111-n them on. Press it again to turn them off. If the reading lamps are left on. they automatically shut off 10 minutes after the ignition has been turned off'.