Heater switch has a short?

[lauriebee]

I have a 2002 Kia Sedona Mini Van
The heater knob( which you can set from 0-4) for low, med etc for heat or ac
This is the switch closest to the steering wheel and has numbers 0.1.2.3.4
Sometimes it comes on by itself and is on high cannot turn it down for the past 4 days it hasn't come on at all
I have found if I giggle the knob it will connect sometimes, I cannot turn it to high med or low as that does nothing
several times i have turned it to 0 ( zero) and it has come on
Its about 8 degrees outside and I need to fix this myself so I can to have heat ALL the time
Do i have a short or does it need to be replaced
Also How do i fix this?
any help would be greatly appreciated
Thank you , Laurie

[PSW]

I have the same problem on 2003 sedona. Did you find a fix. How do you get the swith out to repair/replace

[martin2107]

Hi

If its like mine then the blower switch is faulty what happens is the back of the switch gets red hot and melts the rear part of the switch so the back of the switch moves and the contacts inside move therefore making the blower switch off. remove the dashboard cover by unclipping and undo the two screws holding on the switch panel and inspect the rear of the switch or get a replacement etc.

hope this helps

regards

Martin