Without smart key system
This indicator illuminates when the immobilizer key is inserted and turned to the ON position to start the engine.
At this time, you can start the engine.The indicator goes out after the engine is running.
If this indicator blinks when the ignition switch is in the ON position before starting the engine, we recommend that the system be checked by an authorized Kia dealer.
With smart key system
If any of the following occurs in a vehicle equipped with the smart key, the immobilizer indicator illuminates, blinks or goes off.
Kia Cee'd JD Service Manual: Rear Wheel Guard Repair procedures
Replacement
•
When prying with a flat-tip screwdriver, wrap it with protective
tape, and apply protective tape around the related parts, to
prevent damage.
...
Kia Cee'd JD Service Manual: Cylinder Head Cover Repair procedures
Removal
1.
Remove the engine cover.
2.
Disconnect the battery negative terminal.
3.
Disconnect the intake OCV(Oil Control Valve)connector, exhaust OCV(Oil
Control Valve)connector, and then remove exha ...