2003 Nissan Xterra Owner's Manual - Page 88

ILLUMINATED ENTRY SYSTEM The interior lights illuminate when a front, rear or the back door is opened. Once the doors are closed, these lights turn off in 30 seconds or turn off immediately when the key is turned to the ON position. BATTERY SAVER (if so equipped) If the vehicle doors are not fully closed and the interior lights remain illuminated, they eventually turn off automatically to prevent the battery from becoming discharged. Interior lights that illuminate when doors are opened turn off after approximately 30 minutes. WIC0350 Type B 2-36 Instruments and controls