AC/heater does not work on higher settings

2011 KIA FORTE
133,000 MILES • 4 CYL • 2WD • AUTOMATIC
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KATHRYNK77
  • MEMBER
  • 1 POST
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.
Apr 6, 2018 at 4:30 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 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 enlarge)
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Apr 6, 2018 at 4:40 AM