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). SpecificationsWhen to replace seat belts
The entire in-use seat belt assembly or assemblies should be replaced if the
vehicle has been involved in an accident. This should be done even if no damage
is visible. Additional questions concer ...
Auto light control
To operate the auto light, turn the knob on the end of the control lever.
If you set the knob to “AUTO” the tail lights and headlights will be turned on
or off automatically according to the ...
Automatic-dimming Function
To protect your vision during nighttime driving, your mirror will automatically
dim upon detecting glare from the vehicles traveling behind you. The auto-dimming
function can be controlled by the ...