Kia Sedona: Mode selection
The mode selection button controls the direction of the air flow through the ventilation system.
The air flow outlet port is converted as follows:

Refer to the illustration in the
Automatic heating and air conditioning
Temperature controlSS-B Solenoid Valve(ON/OFF) Schematic Diagrams
Circuit Diagram
...
To resume cruising speed at more than approximately 30 km/h (20 mph)
If any method other than the CRUISE ON-OFF switch was used to cancel cruising
speed and the system is still activated, the most recent set speed will automatically
resume when you move the lever ...