Kia Optima: Underdrive Brake Control Solenoid Valve(UD/B_VFS). Description and OperationDescription
Underdrive brake control solenoid valve(UD/B_VFS) is attached to the valve body. This variable force solenoid valve directly controls the hydraulic pressure inside the underdrive brake.

Removal
Underdrive Brake Control Solenoid Valve(UD/B_VFS). SpecificationsDescription
Continuous Variable Valve Timing (CVVT) system advances or
retards the valve timing of the intake and exhaust valve in accordance with
the ECM control signal which is calculated by the engine sp ...
Seat belt restraint system
WARNING
For maximum restraint system protection, the seat belts must always be
used whenever the vehicle is moving.
Seat belts are most effective when seatbacks are in the upright position.
...
Installation
1.
Connect the horn connector, then
reassemble the horn.
2.
Reassemble the front bumper.
...