Skip the auto shop - Our mechanics make house calls

Q: AC air coming out defrost channel

asked by on

The AC works, but the air is not coming out of the dash vents. Instead, the air is coming out the defrost channel, no matter what I set the air flow switch to.

This is an indication that the mode door actuator within your dash has gone bad. This actuator is responsible for moving the door that allows or blocks off air flow to a certain vent location. Sometimes this part can be accessed through the glovebox, but other times, the entire dash must be removed. I would start by having an inspection performed of the air distribution box by a mechanic to confirm this diagnosis. If the mode door actuator turns out to be bad, have it replaced soon in order to enjoy the air coming out of your dash vents again.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Does the Defroster Help the Wiper Blades Work Better?

The short answer is no. Wiper blades squeegee water from the exterior of your windshield and the defrosters remove moisture from the interior of the vehicle, which includes the inside of your windshield. Sometimes it may appear the defrosters are...

Q: Frozen ac pump

If the a/c compressor pulley does not turn and is seized you will need to see if the inside compressor clutch shaft is seized or the compressor pulley bearing is seized. Sometimes the pulley bearing seizes and ruins the front...

Q: Brake system warning after jumpstarting girlfriends car

Hi there: In some instances, when you jump start a vehicle, an electrical surge will be sent through the vehicle being jumped. Generally, this will not impact sensors or trigger warning lights to illuminate; however, it is possible that is...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.