Cadillac XT4 Owner Manual (GMNA-Localizing-MidEast-13527545) - 2020 -CRC - 9/16/19LIGHTING 143Exit LightingSome exterior lamps and interiorlights come on at night, or in areaswith limited lighting, when the driverdoor is opened after the ignition isturned off. The dome lamp comes onafter the ignition is turned off. Theexterior lamps and dome lamp remainon for a set amount of time, thenautomatically turn off.The exterior lamps turn offimmediately by turning the exteriorlamp control off.This feature can be changed. SeeVehicle Personalization 0 129.Battery Power ProtectionThe battery saver feature is designedto protect the vehicle's battery.If some interior lamps are left on andthe ignition is turned off, the batteryrundown protection systemautomatically turns the lamp off aftersome time.Exterior Lighting BatterySaverThe exterior lamps turn off about10 minutes after the ignition is turnedoff, if the parking lamps or headlampshave been manually left on. Thisprotects against draining the battery.To restart the 10-minute timer, turnthe exterior lamp control to the offposition and then back to the parkinglamp or headlamp position.To keep the lamps on for more than10 minutes, the ignition must be on orin ACC/ACCESSORY.