Kia Optima: Mode SelectionControls the direction of air flow through the ventilation system.

The air from outlet port flows at any mode. Close the ventilation outlets using the knob to block the air flow if you do not want the air.
Face position
Air flow is directed
toward the upper body and face. Additionally, each outlet can be controlled to direct
the air discharged from the outlet. (outlet port: , )
Face - floor position
Air flow is directed
towards the face and the floor. The air to the floor is warmer than the air to the
face (except when the temperature control is set to the extreme cold position).
(outlet port: , , )
Floor position
Most of the air flow
is directed to the floor, with a small amount of the air being directed to the windshield
and side window defroster.
(outlet port: , )
Floor - defrost position
Most of the air flow
is directed to the floor and the windshield with a small amount directed to the
side window defrosters. (outlet port: , , )
Defrost position
Most of the air flow
is directed to the windshield with a small amount of air directed to the side window
defrosters. (outlet port: , )
Fan Speed Control Knob
Temperature Control KnobCatalytic Converter. Description and Operation
Description
The catalytic converter of the gasoline engine is a three
way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates
oxygen from the oxides of nitrogen (NOx).
...
EBD(Electronic Brake-force Distribution). Description and Operation
Operation
The EBD system (Electronic Brake force Distribution) as a sub-system of the ABS
system is to control the maximum braking effectiveness by the rear wheels.
It further utilizes the effic ...
Adjusting 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. ...