Nissan LEAF 2023 Owners Manual
6.10.1. Battery saver system
The light reminder chime will sound if the driver’s door is opened while the following improper operations are detected:
The headlight switch is in either the
or 
position, and the power switch in the ACC, OFF or LOCK position.The headlight switch is in the AUTO position and the front or rear fog light is turned on while the power switch is in the ACC, OFF or LOCK position.
Be sure to turn the headlight switch to the OFF or AUTO position and the rear fog light switch to the OFF position when you leave the vehicle.
When the headlight switch is in the or position while the power switch is in the ON position, the lights will automatically turn off after placing the power switch in the ACC, OFF or LOCK position and opening the driver’s side door.
When the headlight switch remains in either the or position after the lights automatically turn off, the lights will turn on when the power switch is in the ON position or READY to drive position.
Do not leave the lights on when the power switch is in the OFF, ACC or ON position for extended periods of time to prevent the 12-volt battery from being discharged.