Open the hood. Pull the hood release under the dashboard and go in front of the vehicle. Then unlock the hood latch and pull the hood up until it reaches the maximum, to lock in the hydraulic hood strut.
Locate the side marker socket on the back of the headlamp assembly lens & housing.
Twist the socket counterclockwise to unlock it from the headlight and remove it from the headlight.
Pull the bulb out from the socket.
Push the new light bulb into the socket.
You will hear the light bulb snap once it is locked in.
Insert the socket back to the headlight and turn it clockwise to lock in its place.
Check on the light by turning the side marker clearance light on.
2016-2020 Kia Optima Side Marker Clearance Light Replacement What you will need
5W car light bulb
Open the hood. Pull the hood release under the dashboard and go in front of the vehicle.