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: Alternator Description and operation
Description
The Alternator has eight built-in diodes, each rectifying AC current to DC current.
Therefore, DC current appears at alternator "B" terminal.
In addition, the charging voltage of this alternator is regulated by the battery
voltage detection system. ...
Kia Cee'd JD Service Manual: CVVT & Camshaft Description and operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap ...