What’s That Clicking Sound in the Dash? It Might Be Your Blend Door Motor

If you hear a steady clicking sound coming from behind your dash when you start your car or change the A/C settings, you're not alone. 

One of the most common causes is a faulty blend door motor.

This small part helps control the temperature inside your vehicle by opening and closing doors in your air system. When it starts to fail, it can get stuck or try to move the door the wrong way—which is what causes the clicking sound.

You might still feel air coming from the vents, but it may not be the right temperature. Sometimes, it’s stuck on hot when you want cold, or vice versa. Over time, the noise can get worse and the motor may stop working altogether.

If your dash is clicking, it’s a good idea to have it looked at before it turns into a bigger repair.

Give us a call at 972-625-1836 to schedule a reservation. We’ll take care of the noise—and make sure your A/C is working like it should.
By David’s Automotive Repair • The Colony, TX • October 1, 2026
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