air coming out of defrost mode is set to dash vent?

2015 HYUNDAI GENESIS
106,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
Avatar
DGOSSJR
  • MEMBER
  • 1 POST
Coldest air will start coming out of the defrost when mode is set to dash vent. After driving a distance, maybe an hour, when auto air is set to the coldest setting, the air temp coming out of vent is not really cold and you can really hear the blower noise from inside the dash. You can also see a mist coming from the vents.
My guess is a blend door actuator is bad.
My car has dual climate control.
Where are the 2 HVAC actuator solenoids located?
Jul 30, 2025 at 11:24 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Yep, this happens when the MODE blend door actuator goes bad. You must remove the glove box to access the mode actuator, here is the location, check out the images (below). Please upload pictures or videos in your response.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jul 30, 2025 at 1:40 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.