Where are the A/C door actuators located in the car?

Tiny
DYAMONDN
  • MEMBER
  • 2016 FORD FUSION
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
The driver's side and rear vents are blowing hot air while the passenger side is blowing cold and I believe I need to change them all but am having trouble locating the ones on the driver's side.
Thursday, July 31st, 2025 AT 5:15 PM

29 Replies

Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
If the right side is working but the left side, isn't you should be able to change only the left side. There are only the three actuators as in the last image. For the left side you remove the throttle pedal and look to the right of it on the HVAC case and the actuator is there. Remove the screws and the electrical connector and reverse the process to install the new one.
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Thursday, July 31st, 2025 AT 10:13 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
How do I get to the mode?
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Saturday, August 2nd, 2025 AT 12:13 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
I changed the left one out but the driver side and the back vent are still blowing hot air.
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Saturday, August 2nd, 2025 AT 12:26 PM
Tiny
DYAMONDN
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  • 19 POSTS
Ok, I was able to find the mode and changed it out and it fixed the issue. Thanks!
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Saturday, August 2nd, 2025 AT 2:13 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
That's strange. The mode actuator would be the one in the middle (8) and it just selects where the air goes, not the temperature of it, or is that what you meant originally, that you couldn't select where the air went and not that you couldn't change the temperature? Either way, glad to hear you found the issue.
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Saturday, August 2nd, 2025 AT 6:20 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
The temperature couldn’t be controlled for the vents in unison but I’m glad it worked as well.
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Sunday, August 3rd, 2025 AT 10:32 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
Good to hear.
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Sunday, August 3rd, 2025 AT 3:16 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
Ok, so the left side isn’t blowing the warm air anymore of course but it’s still not as cold as the passenger side. Any idea on what may be causing this?
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Wednesday, August 6th, 2025 AT 11:50 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
Check the actuator and make sure it has full travel. Beyond that you would want to have the charge state in the system checked. A low charge can cause odd symptoms depending on the core design.
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Wednesday, August 6th, 2025 AT 1:43 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
What do you mean by full travel?
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Wednesday, August 6th, 2025 AT 1:56 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
I have seen some new parts that were trash, Say it's a blend door, they should be set up so the door moves from a seated position closed to a seated position open, some don't have the power to do that and the door doesn't fully close and you get heat blended into the airstream.
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Wednesday, August 6th, 2025 AT 2:00 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
Got it, ok. Thanks for clarifying, I will check!
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Wednesday, August 6th, 2025 AT 2:15 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
It doesn't take much, even bad seals on the door can cause a temperature difference because the heat is always there.
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Thursday, August 7th, 2025 AT 9:10 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
Hm ok, how can I tell if they are bad?
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Friday, August 8th, 2025 AT 4:41 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
About the only way that doesn't involve taking things apart will involve a camera so you can go in and look. These days they make nice cheap inspection cameras and many parts stores have them as loaner tools. Snake one in through the vent and watch the doors as they move. Will show you problems very fast.
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Friday, August 8th, 2025 AT 8:40 AM
Tiny
DYAMONDN
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  • 19 POSTS
Ohh ok, I will definitely try that. Thank you!
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Saturday, August 9th, 2025 AT 6:32 PM
Tiny
STEVE W.
  • MECHANIC
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You are welcome.
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Saturday, August 9th, 2025 AT 7:33 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
Hi, I’ve tried all of the recommended things and it still hasn’t fixed the issue unfortunately. What next step should I consider?
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Sunday, August 24th, 2025 AT 11:26 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
Did you go in and verify that the doors and seals were working? If yes then the next step would be to put a set of gauges on the system and see what the pressures are, it's possible you have a low charge in the system.
https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
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Sunday, August 24th, 2025 AT 12:47 PM
Tiny
DYAMONDN
  • MEMBER
  • 19 POSTS
Yes I looked at the seals and they are fine. It was blowing cold for a few days but then started blowing hot air again. I’ll try the gauges now.
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Saturday, August 30th, 2025 AT 10:38 AM

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