Kia Optima TF 2011-2026 Owners Manual
Third generation (TF; 2011-present)
IntroductionReplacement
Standard values, such as torques and certain adjustments, must be strictly
observed in the reassembly of all parts.If removed, the following
parts should always be replaced with new ones.
...
Changing Coolant
Change coolant according to the Scheduled Maintenance.
Use only soft (de-mineralized) water in the coolant mixture.
The engine in your vehicle has aluminum engine parts and must be protected
...
Underdrive Brake Control Solenoid Valve(UD/B_VFS). Description and Operation
Description
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 brak ...