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). SpecificationsAdjusting the front seatback recliner
Rotate the upper portion of the control knob forward or backward to recline the
seatback to the desired position. Release the control knob and the seatback will
lock in position. ...
Tachometer
Type A
Type B
The tachometer indicates the approximate number of engine revolutions per minute
(rpm).
Use the tachometer to select the correct shift points and to prevent lugging
and/or ove ...
Chart 3
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