Kia Optima: PartsWhen replacing parts, use KIA MOTORS genuine parts.

Disassembly
ReplacementTo Reset at a Faster Speed
1. Push the RES/ACCEL switch and hold it.
2. Accelerate to desired speed and release the RES/ACCEL switch. While the switch
is pressed, the vehicle will gradually gain speed. ...
Inspection
Check for continuity between the terminals while operating the wiper and washer
switch. If it is not normal condition, replace wiper and wiper switch.
...
Automatic Heating and Cooling Control System
Your vehicle is equipped with an automatic heating and cooling control system
controlled by simply setting the desired temperature. ...