Kia Optima: Headrest
The rear seat(s) is equipped with headrests in the outboard seating positions for the occupant's safety and comfort.
The headrest not only provides comfort for passengers, but also helps protect the head and neck in the event of a collision.
WARNING

Adjusting the height up and down
To raise the headrest, pull it up to the desired position (1). To lower the headrest, push and hold the release button (2) on the headrest support and lower the headrest to the desired position (3).

Removal
To remove the headrest, raise it as far as it can go then press the release button (1) while pulling the headrest upward (2). To reinstall the headrest, put the headrest poles (3) into the holes while pressing the release button (1). Then adjust it to the appropriate height.
WARNING
Make sure the headrest locks in position after adjusting it to properly protect the occupants.
Folding the rear seat
Seat warmer (if equipped)Speedometer
Type A
Type B
The speedometer indicates the forward speed of the vehicle.
The speedometer is calibrated in kilometers per hour and/or miles per hour. ...
Inspection
1.
Turn ignition switch OFF.
2.
Disconnect the oil temperature
sensor connector.
3.
Measure resistance between sensor
signal terminal and sensor g ...
Inspection
Cylinder Head
1.
Inspect for flatness.Using
a precision straight edge and feeler gauge, measure the surface the contacting
the cylinder block and the manifolds for warpage.
...