The replacement is a complicated process, so i would recommend you purchase a factory repair manual (Haynes are ok, but miss things sometimes). Do know, however, that this may be a temporary fix to a bigger problem, in that something caused the switch to go bad. These Kias are notorious for this problem, and it generally ends up being (not limited to) either a fan motor, blower motor resistor, or a fan relay that is going bad and causing resistance to heat up the circuit and damage the switch. Unless you have electrical experience, you should not try to tackle this problem and take the car to a COMPETENT repair shop experienced in electronic diagnostics (NOTE that I did NOT say dealer, sometimes they are no help at all.)
very carefully
How to replace throttle sensor kia spectra 2003
It is quite simple to replace the flasher relay switch on your 2001 Kia. The flasher relay switch simply plugs in and out.
Where is the knock sensor for a 2003 kia spectra
No, there is not.
how to replace the crankshaft position sensor located in a 2003 kia rio
how do you replace the timing belt and time the engine of a2003 kia optima
Which fan motor?
Under the rear seat.
You must replace entire axle.
call a mechanic
It could cost between 300 dollars and 600 dollars to replace the radiator in a 2003 Kia Optima. This varies with the type of radiator chosen and your location.