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 LocationRepair procedures
Operation and Leakage Check
Check all of the following items:
Component
Procedure
Brake Booster (A)
Check brake operation by applying the brakes durin ...
Tilt Steering
To change the steering wheel angle, pull up on the lock release (located beneath
the steering column), adjust the steering wheel to the desired angle, then release
the lock-release to lock the s ...
Engine compartment
2.4L Engine
2.0L Engine
* The actual engine room in the vehicle may differ from the illustration.
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake/clutch fluid reservoir
...