When all doors are locked and closed, the puddle lamp will come on for 15 seconds if any of the below is performed.
At this time, if you press the door lock button, the lamps will turn off immediately.
Interior light
DefrosterKia Cee'd JD Service Manual: Back-up Lamp Switch Repair procedures
Inspection
1.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
2.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
...
Kia Cee'd JD Service Manual: Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Open the tailgate and remove the tailgate trim.
(Refer to Body - "Tailgate Trim")
3.
Disconnect the back view camera connector ...