Most vehicles come with an air conditioning (A/C) system that keeps the interior nice and cool. You can operate this system using the A/C control switch on your center console. While this is certainly convenient, the switch can also cause problems if it stops working.
Signs Your A/C Switch Is Not Working
It can be confusing trying to diagnose the problem, especially when your A/C system has a lot of issues. Thankfully, there are a few symptoms you can look out for if you think the A/C switch is to blame.
A/C Settings Won’t Work
A bad control switch won’t be able to accurately change your A/C system’s settings. The button will most likely refuse to respond even if you try to increase the fan speed. In some cases, changing the temperature might even lead to the A/C turning off completely. If this happens to you, it’s best to call a mechanic as soon as possible.
A/C Compressor Won’t Turn On
If your A/C control panel isn’t working, then your A/C compressor won’t turn on. A broken switch won’t be able to send a signal to the A/C compressor. Without this signal, the compressor won’t circulate refrigerant through your vehicle’s A/C system. This makes your vehicle’s interior uncomfortably hot for you and your passengers.
A/C System Blows Hot Air or Parts Overheat
Sometimes, when the A/C control switch isn’t working, the A/C system starts blowing out hot instead of cold air. This usually happens because of a blown fuse or frayed wire. If a fuse or wire is faulty, then the entire A/C system malfunctions, including the switch.
When this happens, parts of your A/C system can overheat. A blown fuse is typically caused by an overloaded circuit, which can also lead to melting, and, in extreme cases, even fire. This can be a big safety issue, so be sure to bring your vehicle to a mechanic as soon as possible if you suspect that your vehicle’s A/C switch has a blown fuse.
What Does the A/C Control Switch Do?
The A/C control switch allows you to easily turn your A/C system on and off. It also lets you control your A/C’s different settings so you can adjust the cooling level and fan speed according to your preference.
In some modern vehicles, you’ll find flat-panel or touchscreen displays instead of buttons. These touchscreen displays allow you to control not just the A/C, but also different features of your vehicle, such as the audio system. While this style might appear more high-tech, some drivers still prefer the traditional A/C control switch.
How To Test A/C Control Switch
You’ll need to conduct a continuity test to check your A/C control switch. First, you’ll need to prepare an automotive multimeter and unplug the switch from the controller to the connector. Switch your multimeter to the continuity setting, and connect each of the switch’s terminals to the test probe. Keep the two terminals as still as possible for an accurate reading. After three to four seconds, check the numbers on the screen. Cross-check if the numbers match the information written in your owner’s manual. If they don’t match, then your A/C control switch is most likely broken.
You can also bring your vehicle to a mechanic if you don’t have a multimeter. They can also check other parts of your A/C system for any other related issues.
Other A/C Control Switch FAQ
Like most parts of your vehicle, your A/C control switch will wear out over time. It’s also one of the buttons you frequently touch on your panel, so it can easily get stuck or broken. In some cases, the button fails because of a blown fuse or a manufacturing defect with the control panel itself.
With a broken control switch, you won’t be able to turn on your A/C system. This won’t be much of an issue If you live somewhere with a cool climate. However, if you live in the tropics, then driving with no A/C can be uncomfortable. In some cases, it can even be dangerous. Vehicles heat up quickly, which can put you and your passengers at risk of dehydration and a stroke. Consider replacing your A/C control switch right away, so you and your passengers can stay safe and cool.
The price of a control switch varies depending on your vehicle’s make, model, and the product’s brand. Replacing an A/C control switch can cost you anywhere from $30 to $310. Sometimes, the switch is not serviceable without replacing the whole controller. However, keep in mind that a broken switch can also be a sign of other issues with your A/C system, so you might also need to buy other parts.
Sometimes, the A/C control switch is not serviceable without replacing the whole controller.
–Anthony Harlin, ASE Certified Master Automobile Technician
Where to Get a New A/C Control Switch for Your Vehicle
A malfunctioning A/C can make riding your vehicle less enjoyable. This is why it’s important to conduct repairs like replacing a failed A/C control switch as soon as possible. Fortunately, it’s not too difficult to find a replacement that’s compatible with your vehicle here at CarParts.com.
Why waste time driving between brick-and-mortar auto parts stores when you can hop on our website and order A/C components online? By selecting your vehicle’s year, make, and model on our tool, we’ll show you the parts that are compatible with your ride.
Our mission is to make sure that the ordering and delivery process is as easy and swift as possible. We’ll ship your order from the distribution center nearest you, and make sure it arrives at your doorstep in a matter of days.
Save time and money by shopping for a new A/C control switch at CarParts.com.
Keep Reading: Related Posts
Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.
