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Heater and defrost issues?

Tiny
VIKINGS97
  • MEMBER
  • 2013 DODGE RAM
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
From time to time, it will blow out the floor when the knob is on defrost. If I shut it off and leave it sit it will work fine for a while. I tried a HVAC computer reset but the light won't blink like it is supposed to.
Wednesday, December 21st, 2022 AT 3:15 PM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This is common when the mode actuator goes out. Here is the location so you can change it out. Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Thursday, December 22nd, 2022 AT 2:07 PM
Tiny
VIKINGS97
  • MEMBER
  • 4 POSTS
Which actuator is the defrost? Can't tell from the pictures.
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Friday, December 23rd, 2022 AT 8:04 AM
Tiny
VIKINGS97
  • MEMBER
  • 4 POSTS
I tried a HVAC reboot but the light won't blink like it is supposed to.
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Friday, December 23rd, 2022 AT 8:05 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Here is the location of the actuator inside of the dash.
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Saturday, December 24th, 2022 AT 11:28 AM

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