Kia Optima: Key operations
Type A

Type B
Type A
Used to start the engine, lock and unlock the doors.
Type B
To remove the mechanical key, press and hold the release button and remove the mechanical key.
To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
WARNING - Ignition key
Leaving children unattended in a vehicle with the ignition key is dangerous even if the key is not in the ignition switch. Children copy adults and they could place the key in the ignition switch. The ignition key would enable children to operate power windows or other controls, or even make the vehicle move, which could result in serious bodily injury or even death. Never leave the keys in your vehicle with unsupervised children.
WARNING
Use only Kia original parts for the ignition key in your vehicle. If an aftermarket key is used, the ignition switch may not return to ON after START. If this happens, the starter will continue to operate causing damage to the starter motor and possible fire due to excessive current in the wiring.
Record your key number
Immobilizer system (if equipped)Repair procedures
Inspection
Front Door Lock Actuator Inspection
1.
Remove the front door trim.
(Refer to the BD group - "Front door")
2.
Remove the front door module.
...
Installation
1.
Install the key lock cylinder.
2.
Install the key warning switch
and key Illumination.
3.
Install the key warning/immobilizer
connector.
...
Central door locks
The central door locking switch is located on the driver’s arm rest. It is operated
by depressing the door lock switch. If any door is open when the switch is depressed,
the door will remain l ...