Tesla cars have grown to my liking because of their advanced air conditioning system. But Tesla’s AC system isn’t totally free from faults. Sometimes, the AC might blow hot air or stop working at all.
So, why is the Tesla air conditioning not working? Tesla air conditioning might not work if the firmware is outdated or there are other software problems. Mechanical issues, like a faulty AC compressor, temperature sensor, or low refrigerant level, can also cause this problem.
I will elaborate on the reasons for this problem and show you the most effective solutions. Let’s get inside.
Why Is Tesla Air Conditioning Not Working?
There can be several underlying reasons for this problem besides the apparent issues. Let me address those problems and provide solutions.
1. Outdated Firmware
If your Tesla has outdated firmware, the AC might not work properly. The firmware should always be updated to the latest version. This is the most common reason why the air conditioning stops working in Tesla cars.
Solution
- You should update the firmware first. Go to “Controls” and then select “Software”. From there, tap on “Check for updates.” If an update is available, you should download and install the update.
- After updating the firmware, reboot your car. Tap the Power Off button on the main screen and restart it after about 5 minutes. After the reboot, the air conditioning should work fine.
2. Wrong AC Settings
The downside of having a smart car with a complex AC system is the AC settings can be overwhelming. Some of the settings may override the normal functioning. So, the AC will not perform properly.
Solution
- You should recheck the AC settings. For example, if you want the AC to blow cool air, the cabin temperature should be lower than the ambient temperature.
On the other hand, the cabin temperature should be set higher if you want hot air. Check the following image and climate control guidelines on the Tesla website.
- Keeping the climate control in auto mode can cause AC issues. So, you should turn the auto mode off.
3. Wrong Cabin Overheat Protection Settings
The cabin overheat protection feature is useful for keeping the cabin temperature under a specific level. It has three options. If the “No AC” option is selected, the air conditioning in your Tesla won’t work.
Solution
- Go to “Control” and then select “Safety.” Choose the “Cabin Overheat Protection” option.
- From the three options available, select “Off” to turn the overheat protection off.
- After that, reboot your Tesla. Go to “Cabin Overheat Protection” again and turn it on.
- Now, the AC should work properly.
4. Faulty Air Temperature Sensor
The air temperature sensors in your Tesla are important for maintaining the desired cabin temperature. They measure the cabin and ambient temperature to provide the right amount of cool or hot air inside the cabin. If these sensors are faulty, the AC won’t work properly.
Solution
- Turn the car off and pop the hood.
- Remove the top panel from the front trunk.
- Check the owner’s manual to find the temperature sensor location.
- Disconnect the wiring harness for the temperature sensor.
- Remove the temperature sensor and install a new one.
- Connect the wiring harness and put the top cover back.
- Start the car and test the air conditioning system.
5. Low Refrigerant Level
Even though Tesla cars use electric compressors, the refrigerant is similar to traditional cars. Over time, the refrigerant level in your Tesla can drop. There can also be refrigerant leaks. If the refrigerant level is too low, the air conditioning system in your car won’t work.
Solution
The solution has two aspects. You need to check for refrigerant leaks and refill the refrigerant.
This is a highly technical task, so I suggest you take the vehicle to the nearest service center. Certified technicians will check the vehicle for refrigerant leaks and refill the refrigerant as necessary. This can cost about $200-300.
6. Bad Compressor
If the electric compressor in your Tesla is bad, there will be unusual noise inside the cabin. You will hear swooshing or grinding noises, and the air conditioning will stop working.
Solution
- The compressor is the most crucial part of the HVAC system in your car. So, you should get it checked and replaced by a certified technician.
- Contact the Tesla service center in your area for compressor issues. Replacing the compressor can cost about $1,100-1,300, including parts and labor.
7. Clogged Cabin Air Filter
Hot or cool air from the air conditioning system passes through the cabin air filter. Over time, the filter can get dirty or clogged. Dirty air filters reduce the AC performance, and clogged filters can prevent the AC from working.
Solution
- Reach under the glove box and take the plastic panel off.
- Remove the panel over the cabin air filter. Then, take the old filters off.
- If the cleaners are dirty, clean them with an air blower. But if the filters are clogged, it is better to replace them.
- Install the new air filters into the housing and close the panel.
- Turn the AC on and see how it works.
Can I Drive If the Tesla Air Conditioning Is Not Working?
Source: Reddit
A faulty air conditioning system might not impact the driving performance of your Tesla. So you can drive without any issues.
But your ride will not be comfortable due to the AC malfunction. Besides, the faulty system can put unnecessary stress on the battery pack. So, you will get a lower range than expected. It is better to address the problem first.
FAQs
Here are answers to some commonly asked questions about faulty Tesla air conditioning systems. Have a look.
You may have an incorrect temperature setting. The thermostat might not also work properly. Clogged cabin air filters can also cause this problem.
Low coolant level isn’t directly responsible for the AC to function properly. Because the AC in Tesla cars isn’t run by the engine. It has coolants to keep the battery and other components cool. It can have a slight impact on the overall cooling performance.
No. The AC function has nothing to do with charging. So, it should run normally. If the AC is not working while charging, the above issues can be responsible.
Final Words
Not getting the desired performance from the Tesla air conditioning system is frustrating. To solve the problem, you first need to determine why the Tesla air conditioning is not working.
The most common reason behind this is outdated firmware or other software issues. These problems can be resolved by updating the firmware and performing a reboot. But if there are mechanical problems like faulty sensors, compressors, or air filters, you need to fix or replace those components. Always use the correct AC setting for optimal performance.
I am an experienced guide in electric mobility, offering clear and expert guidance for those venturing into the world of electric vehicles.
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