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.

A: This is an indication that the mode door ac...

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・Save up to 30%

Get a quote

What others are asking

Q: Low rpm & stalling

This is often times related to what is called an idle air control module which regulates the air flow at idle as the air enters the intake system and is mixed with fuel before being injected into the motor. When...

Q: Water leaking out of car

Hello. This issue is a common problem that owners of your particular vehicle may encounter. The water leakage is usually the result from aged door trim weather stripping. Overtime the weather stripping will lose its sealing capability due to it...

Q: Would a turbocharger or supercharger from a 1998 camaro fit in my 1997 camaro

Hello there, this will be a bit of a complex answer. In most cases turbo and supercharger are installed with kits. These are required as many things are different. Kits generally replace such things such as the exhaust manifold, intercooler...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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.