To turn off the blowers, turn the fan speed control knob to the "0" position.
Kia Cee'd JD Service Manual: Floor Console Assembly Repair procedures
Replacement
[M/T]
•
When prying with a flat-tip screwdriver, wrap it with protective
tape, and apply protective tape around the related parts, to
prevent damage.
...
Kia Cee'd JD Service Manual: DC DC Converter Components and components location
Component Location
1. DC/DC converter (LHD)
2. DC/DC converter (RHD)
...