Skip the auto shop - Our mechanics make house calls

Q: Defroster malfunctioning

asked by on

Hi. I'm having some issues with the defroster in my car. On the left side, the cool air is blowing out. Whereas on the right side, the warm air is blowing. What is causing this and how could I fix it? Thank you.

A: Your car has a dual temperature control sys...

Your car has a dual temperature control system. If you put both sides to full cold or full hot, then it will not be in automatic mode and should be blow fully cold or hot out of the vents.

If you put the system to dull hot then if one side is cold and the other hot, then the system has a bad temperature control actuator to the side that is not correct. The actuators are on the evaporator case on right side of the dash. If you want to have this thoroughly checked, have a mechanic diagnose your AC system and make repairs as needed.

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

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: Brake line leaking at front passenger's side wheel

Hi. Sounds to me that you have a leaking brake line to your brake caliper. Also the loss in brake pressure is because of the release in pressure from the leaking line. I would recommend having a certified mechanic come...

Q: my car not start and no crank

The code P1000 indicates that the evaporative emission system has not completed its automatic testing of the system. It sometimes takes more than one drive to complete the tests. A combination of highway and city driving is needed to complete...

Q: My drive light is out

If all the other interior lights dim when you turn your lights on, the issue might be in the cluster itself. There is a printed circuit sheet that at times burns out in a section. This is like a break...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...