2017 Mazda CX-5 AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 Mazda CX-5 and How to Fix Them

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Reviewed by
Aisha
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 2017 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 2017 Mazda CX-5?

When your 2017 Mazda CX-5's AC isn't functioning properly, 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. If the filters are clean, examine the refrigerant levels, as low refrigerant can cause the system to blow warm air. You can use a pressure gauge for this check or seek professional help if you're unsure. Additionally, look for any visible signs of leaks in the AC system, such as oily residue, which can indicate refrigerant loss. It's also crucial to check the AC compressor to ensure it engages properly when the system is activated; a malfunctioning compressor may require repair or replacement. Finally, inspect the electrical connections related to the AC system for any loose or damaged wires, as faulty connections can prevent the AC from operating correctly. By following these steps, you can effectively diagnose and address common AC issues in your Mazda CX-5.

What are the common problems that could cause the AC system to stop working in a 2017 Mazda CX-5?

When the AC system in your 2017 Mazda CX-5 stops functioning, it can be frustrating, but understanding the common issues can help you diagnose the problem. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the cooling process. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty clutch or complete compressor failure can prevent the system from operating. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the AC's functionality, so examining these components is crucial. Don't overlook the condenser, as any leaks or blockages can severely impact cooling performance. Similarly, the evaporator may have clogs or leaks that need attention. Lastly, ensure that the blower motor is functioning properly, as a malfunction here can lead to insufficient airflow through the vents. By systematically checking these components, you can identify the root cause of the AC failure and take appropriate steps to restore comfort in your vehicle.

How urgent is it to repair the non-functioning AC in a 2017 Mazda CX-5?

When faced with a non-functioning AC in your 2017 Mazda CX-5, the urgency of repair cannot be overstated. The discomfort of sweltering heat during summer drives can significantly detract from your driving experience, making it essential to prioritize AC repairs for your comfort. Moreover, a malfunctioning AC can compromise the air quality within your vehicle, potentially leading to health issues for you and your passengers. Beyond immediate comfort and health concerns, neglecting the AC system can adversely affect your vehicle's resale value; prospective buyers often view a well-maintained AC as a critical feature. Additionally, operating a faulty AC can place undue strain on other mechanical components, increasing the risk of more severe and costly repairs down the line. Therefore, addressing AC issues promptly not only enhances your driving experience but also safeguards your vehicle's overall performance and value.

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