Switching from front vent, defroster, feet, does not correspond?

Tiny
SIXTY6GTO
  • MEMBER
  • 2015 LEXUS IS 250
  • 2.5L
  • 2WD
  • AUTOMATIC
  • 117,700 MILES
The air conditioning works but switching from front vent, defroster, feet, etc does not correspond with the input to the controls. Also this problem does not allow full control of the temperatures. Is there a blend door? Is there something else? What are common problems and items to check first? I attached a picture of the type of controls on this vehicle.
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Saturday, January 10th, 2026 AT 9:15 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,929 POSTS
Yep, this happens when the air mix actuator goes out which is common, here is the location and calibration instructions have the replacement. Here is how to rest the system once the repair are made

https://www.2carpros.com/articles/step-by-step-guide-to-reset-your-cars-hvac-system-an-essential-for-every

Check out the images (below). Please upload an image or a short video in your response. Ken
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Sunday, January 11th, 2026 AT 11:02 AM
Tiny
SIXTY6GTO
  • MEMBER
  • 104 POSTS
Any chance there are service manual written procedures and video to change the air outlet control servo and the air mix control servo specifically on this make model? That would be much appreciated.
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Sunday, January 11th, 2026 AT 1:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,929 POSTS
This is all we have, they don't give us step by step for some reason on this repair. Sorry. If you upload images for what you are doing to can help guide you through the repair.
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Monday, January 12th, 2026 AT 11:30 AM

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