The indicator displays which automatic transaxle shift lever is selected.
Kia Cee'd JD Service Manual: Master Cylinder Repair procedures
Removal [LHD]
1.
Turm ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the battery.
(Refer to Engine Electrical system-"Battery")
3.
Remove the ECM.
...
Kia Cee'd JD Owners Manual: Room lamp
■ Type A
Type A
Press the button to turn the light on or off.
If the map lamp turns on by the map
lamp switch, the room lamp will turn on.
■ Type B
Type B
Press the switch to turn on the
room lamp.
Press the switch O to turn off the room
lamp. ...