Kia Optima: Headrest
The driver's and front passenger's seats are equipped with a headrest for the occupant's safety and comfort.
The headrest not only provides comfort for the driver and front passenger, but also helps to protect the head and neck in the event of a collision.
WARNING

Forward and backward adjustment
The headrest may be adjusted forward to 3 different positions by pulling the headrest forward to the desired detent. To adjust the headrest to it’s furthest backwards position, pull it fully forward to the farthest position and release it. Adjust the headrest so that it properly supports the head and neck.

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.
Lumbar support
Seat warmer (if equipped)Changing Coolant
Change coolant according to the Scheduled Maintenance.
Use only soft (de-mineralized) water in the coolant mixture.
The engine in your vehicle has aluminum engine parts and must be protected
...
Recommended lubricants and capacities
To help achieve proper engine and powertrain performance and durability, use
only lubricants of the proper quality. The correct
lubricants also help promote engine efficiency that results in impro ...
Removal
Replacing an on/off solenoid valve (SS-A, SS-B) does not require additional
hydraulic pressure adjustment; however, the hydraulic pre ...