2020 Mazda CX-5 AC Isn't Working

Troubleshooting Common AC Issues in Your 2020 Mazda CX-5 and How to Restore Comfort

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
37% chance it's the
Refrigerant Leak
0%
21% chance it's the
Climate Control Electrical Issue
0%
12% chance it's the
AC Compressor
0%
30% chance it's
Something else
The most common reasons a 2020 Mazda CX-5 AC isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
  • Refrigerant Leak: A refrigerant leak can occur due to damaged hoses, seals, or connections, resulting in decreased cooling efficiency in the air conditioning system.
  • Climate Control Electrical Issue: A faulty climate control module or a blown fuse could be causing the electrical issues in the climate control system.
  • AC Compressor: A faulty AC compressor may be due to a lack of lubrication, electrical issues, or internal mechanical failure, resulting in inadequate cooling performance.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial diagnostic steps to take when the AC isn't working in a 2020 Mazda CX-5?

When your 2020 Mazda CX-5's AC isn't functioning, start by checking the thermostat settings to ensure they are correctly adjusted to a cool temperature, as incorrect settings can often be the simplest explanation for the issue. Next, inspect the air filters; dirty or clogged filters can significantly restrict airflow, leading to poor AC performance, so replacing them may resolve the problem. It's also crucial to verify the refrigerant levels, as low levels can cause the system to blow warm air; using a pressure gauge can help you assess this, or you may want to consult a professional if you're unsure. Additionally, examine the AC compressor for any unusual noises or visible damage, as this component is vital for cooling. Don't forget to check for leaks around hose connections and the compressor, as these can lead to refrigerant loss and diminished cooling efficiency. Finally, test the electrical components related to the AC system to ensure all connections are secure and functioning properly, as faulty electrical parts can prevent the AC from operating effectively. By following these steps, you can systematically diagnose and potentially resolve the AC issues in your Mazda CX-5.

What are the common problems that could cause the AC to stop working in a 2020 Mazda CX-5?

When your 2020 Mazda CX-5's air conditioning system fails to deliver cool air, several common issues may be at play. Start by checking the refrigerant levels, as low refrigerant can significantly impair cooling efficiency. If the refrigerant is adequate, the next step is to inspect the compressor; a faulty compressor can prevent the system from producing cold air altogether. Additionally, electrical problems such as blown fuses or damaged wiring can disrupt the AC's operation, so it's wise to examine these components as well. Clogged or leaking refrigerant lines can also hinder performance, so look for any visible signs of damage or blockages. Furthermore, a damaged condenser can obstruct the cooling process, while issues with the blower motor may result in insufficient airflow from the vents. By systematically checking these areas, you can identify the root cause of the AC malfunction and determine whether a DIY fix is feasible or if professional assistance is necessary.

How urgent is it to address the AC malfunction in a 2020 Mazda CX-5?

Addressing an AC malfunction in a 2020 Mazda CX-5 is crucial for several reasons. First and foremost, a faulty air conditioning system can significantly compromise passenger comfort, especially during sweltering summer months or on long road trips. Beyond mere discomfort, neglecting AC issues can lead to more severe complications, such as increased wear and tear on the vehicle's components, which may result in costly repairs. Additionally, an AC malfunction could indicate underlying problems within the vehicle's cooling system, potentially affecting the engine's performance and safety. Therefore, it is essential to prioritize the repair of any AC issues promptly to ensure a comfortable driving experience, prevent further damage, and maintain the overall health and safety of your Mazda CX-5.

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Troubleshooting 2020 Mazda CX-5 AC Not Working Issues