Skip the auto shop - Our mechanics make house calls

Q: Air control knob staying in one position

asked by on

My defrost/air knob only stays in one position. When trying to turn it, the knob bounces back to to the defrost position.

A: There is a possibility that the mode door f...

There is a possibility that the mode door for the vent, floor, defrost blend door is broken in the evaporator case, or that something fell into the case through the defroster duct and is binding the door. The dash panel and center controls need to be removed to access the lever. I recommend you seek a certified mechanic, such as one from YourMechanic, to come and test your vehicle for you to see if they can see if something is binding the lever or cable and that the problem is not inside the evaporator case.

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: My car shuts off while I'm driving sometimes and makes a bubbling noise once the car is warmed up or if I'm driving

Your coolant overflow reservoir usually bubbles when the engine has a restriction that causes the flow of coolant to be reduced. This can lead to or be a cause of the engine to overheat. I would recommend getting a coolant...

Q: Intermittent jerking when shifting

Since you said the problem only happens between 3rd and 4th gear, you likely have an internal transmission problem. An engine performance problem would likely be noticeable in all gears. Also, since the problem only happens when shifting from 3rd...

Q: Car won't move

Besides the MAP sensor code, you may have a transmission major failure or a problem with the shift cable. The shift cable bushings wear out and these vehicles sometimes the cable will pop off of the shift linkage of the...

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 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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...