Skip the auto shop - Our mechanics make house calls

Q: Dual zone control not working right

asked by on

The dual zone control is not working properly. There is a 10-degree temperature difference between the driver's side and passenger's side air conditioning. Also, there is a lower airflow out of the passenger's side vents.

A: Each side has it’s own temperature blend do...

Each side has it’s own temperature blend door, and sun sensor. There is an in-car temp sensor on the drivers side. I wouldn’t be too worried about 10 degrees. The air flow might indicate a problem. The whole system is computer controlled. It has the ability to set trouble codes. If a mode door, or blend door is malfunctioning, is should set a code. Only a very expensive aftermarket scan tool will have the ability to check for this, or a Ford scan tool. Check your cabin air filter. They can become very dirty, very quickly. I found a Ford bulletin about a software update for the HVAC unit, so it might be best to have Ford check it out. If you’re out of warranty, they will probably charge you for the update.

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: Windshield wipers stopped working

Hi there. This can occur from a blown fuse, a failed motor, or a problem with the control switch. I usually check the fuse first to see if it has blown. If it has then I would replace it and...

Q: Air belt broke, put another on and it snapped right away.

If the A/C belt is getting shredded, then you need to check to see if the A/C pulley, tensioner or any other accessory on the belt is locked up. The A/C pulley and other pulleys should turn free with little...

Q: How do I set the auto lamp?

Your truck has a feature that will allow your headlights to stay on after you turn the vehicle off. This headlight feature is called the Autolamp. You can adjust the settings of Auto Lamp to keep the headlights on for...

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 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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...