Kia Sedona: Adjusting the height up and down
2nd row outboard

2nd row center

2nd row for SXL package

3rd row

To raise the headrest :
1. Pull it up to the desired position (1).
To lower the headrest :
1. Push and hold the release button (2) on the headrest support
2. Lower the headrest to the desired position (3).
Headrest (for rear seat)
Removal and reinstallationSpark Plug Specifications
Specification
ItemSpecificationTypeSILZKR7B11Gap1.0 ~ 1.1 mm(0.0394 ~ 0.0433 in.)Insulation resistance (MΩ)10 or more
...
Seatback angle
Push the control switch forward or backward to move the seatback to the desired
angle. Release the switch once the seat reaches the desired position. ...