Repair Lane

Blend Door Actuator Replacement

Replacement of the small motor that aims hot or cold air where you tell it to — the fix for one-side-cold and stuck-temperature problems.

Difficulty: moderate~13 hrs1–3 hours
Estimated total
$145–675
Parts$30–150
Labor$115–525
Labor time13 hrs
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What's involved

What this repair actually is.

Blend door actuators are little electric motors inside the dash that move the doors mixing hot and cold air and directing it to your vents. When one fails, a side of the car gets stuck hot or cold, or air comes out of the wrong vents, often with a clicking sound. We access the failed actuator behind the dash, replace it, and recalibrate the climate system.

Symptoms

How you can tell.

  • Driver and passenger sides blow different temperatures
  • Temperature stuck on hot or cold no matter the setting
  • Repeated clicking or knocking behind the dash
  • Air comes out of the wrong vents
  • Defrost setting doesn't send air to the windshield
If you delay

A stuck blend door means no working heat or defrost when you need it, and a clicking actuator can chew up its plastic gears until the door jams completely.

Educational estimate. Real pricing depends on your vehicle, the inspection, parts availability, taxes, and shop rates. Use this as a guide while you shop quotes.
Related

Often done together.