When the interior light switch is in the DOOR position and all doors (and tailgate) are locked and closed, the room lamp will come on for 30 seconds if any of the below is performed.
At this time, if you press the door lock button, the lamps will turn off immediately.
Kia Cee'd JD Service Manual: Heater Unit Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Recover the refrigerant with a recovery/recycling/charging station.
3.
When the engine is cool, drain the engine coolant from the radiato ...
Kia Cee'd JD Owners Manual: Climate control air filter
Filter inspection
If the vehicle is operated in the severely
air-polluted cities or on dusty rough
roads for a long period, it should be
inspected more frequently and replaced
earlier. When you, the owner, replace the
climate control air filter, replace it performing
the following proce ...