Kia Optima: Valve Body. Description and OperationDescription
The valve body is essential to automatic transaxle control and consists of various valves used to control the oil feed from the oil pump. Specifically, these valves consist of pressure regulator valves, oil redirection valves, shift valves, and manual valves. The body also features electronic solenoid valves that ensure smooth gear changes.

Replacement
Valve Body. Components and Components LocationInspection
1.
Check each part for cracks, damage
or wear, and replace the coolant pump assembly if necessary.
2.
Check the bearing for damage,
abnormal noise and sluggish rotat ...
Removal
1.
Turn the ignition switch OFF.
2.
Disconnect the OTS connector (A).
3.
Remove the OTS.
...
Removal
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the auto light sensor
(A) from crash pad upper side by using screw (-) driver.
...