No defroster where is the actuator?

2016 LINCOLN MKS
127,000 MILES • 3.7L • 6 CYL • 4WD • AUTOMATIC
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HORSESAS
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  • 2 POSTS
The actuator by the fan only controls the fresh air where is the actuator that blends the defrost mid then and floor heat I have only middle vent only no floor heat no defrost
Jan 9, 2026 at 10:10 AM
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STRAILER
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Yep, it sounds like the mode blend door actuator is out which is common, it is located above the accelerator pedal, it might be a little tough to get to but if you use 1/4 drive tools with an universal and stick with it you can get it replaced. Once completed do this to recalibrated the actuators.

Remove Smart Junction Box (SJB) fuse 15 for at least one minute.

Check out the images (below). Let us know if you need anything else.

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Jan 10, 2026 at 9:40 AM