Climate control selector not working?

2008 HONDA ACCORD
204,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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TWEBB101
Hello! Just started recently, but the climate control buttons aren't working anymore. The lights will come on, but the vents don't change. When I press a button to change from floor to defrost to straight on, etc., nothing happens, no sounds, nothing. Is that a vacuum leak? Bad door motor? Something else?
Apr 18, 2025 at 8:33 PM
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STRAILER
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This can be the HVAC system controller or most likely the mode actuator. Here is the location so you can swap it out. This is what changes the vents. Check out the images (below). Let us know how it goes.
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Apr 20, 2025 at 11:22 AM
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TWEBB101
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Thanks Ken. How involved is the process of getting to the point of replacing the actuator?
Apr 29, 2025 at 6:13 AM
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STRAILER
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Good question, it looks like you will need to remove the blower unit housing to get to the mode actuator, here is how the job is done. Check out the images (below). Let us know how it goes.
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Apr 29, 2025 at 10:33 AM
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TWEBB101
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  • 183 POSTS
Just following up; put a new mode actuator in and we're back up and running! Thanks for the assist.
Nov 25, 2025 at 4:42 PM
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STRAILER
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Nice work! Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.
Nov 26, 2025 at 9:59 AM
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