AC/heater does not work on higher settings

KATHRYNK77

MEMBER
2011 KIA FORTE
4 CYL
2WD
AUTOMATIC
133,000 MILES

AC and heater work only on levels one to two, as soon as I turn it to three or four it does not work at all not even the defrost. I am thinking it is the switch on the climate control knob. Am I wrong? I have checked all fuses and replaced them.

Friday, April 6th, 2018 AT 4:30 AM

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning.

The blower motor resistor is the most common failure for this issue. It is located under the dash passenger side. I attached a picture and a procedure for you. Easy to replace.

Roy

Replacement:

1. Disconnect the negative (-) battery terminal.
2. Remove the crashpad lower panel.

3. Disconnect the connector (A) and then remove the blower resistor (B).

Image (Click to make bigger)