2019 Mitsubishi Mirage AC Isn't Working

Common Causes of AC Failure in Your 2019 Mitsubishi Mirage 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 2019 Mitsubishi Mirage 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 2019 Mitsubishi Mirage?

When your 2019 Mitsubishi Mirage's AC isn't functioning properly, start by checking the thermostat settings to ensure it's set lower than the current temperature, as this is a simple yet often overlooked step. Next, inspect the air filters; if they are dirty or clogged, replacing them can significantly improve airflow and AC performance. Moving on, take a look at the condenser unit outside the vehicle. Clear any debris blocking it and straighten any bent fins to enhance its efficiency. It's also crucial to assess the refrigerant levels, as low levels can lead to warm air blowing from the vents; if necessary, recharge the system. Additionally, examine the compressor to ensure it engages when the AC is activated; if it doesn't, there may be an electrical issue or a fault with the compressor itself. Lastly, keep an eye out for any visible refrigerant leaks, as these can severely impact cooling efficiency and require prompt repair. By systematically following these diagnostic steps, you can effectively troubleshoot the AC issues in your Mitsubishi Mirage before seeking professional assistance.

What are the common problems that could cause the AC to stop working in a 2019 Mitsubishi Mirage?

When the air conditioning system in your 2019 Mitsubishi Mirage ceases to function, several common problems may be at play. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the system's cooling capabilities. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can prevent the AC from cooling altogether. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the system's operation, so examining these components is crucial. Another potential issue is a clogged or leaking condenser, which can severely impact the AC's efficiency. Lastly, ensure that the blower motor is functioning properly, as a malfunctioning motor can lead to insufficient airflow from the vents. By understanding these common problems, you can better diagnose and potentially resolve AC issues in your Mitsubishi Mirage, saving time and money on repairs.

How urgent is it to address the non-functioning AC in a 2019 Mitsubishi Mirage?

Addressing a non-functioning AC in your 2019 Mitsubishi Mirage is more urgent than it may initially seem. Driving without air conditioning in hot weather can lead to significant discomfort and health risks, particularly during the sweltering summer months. Beyond personal comfort, a malfunctioning AC system may signal deeper issues within the vehicle's cooling system, which, if left unresolved, could result in overheating and serious engine damage. Additionally, a non-functioning AC might indicate a refrigerant leak, posing environmental hazards and further complicating repairs. By tackling AC issues promptly, you not only enhance your driving experience but also prevent potential damage that could lead to costly repairs down the line. Therefore, while it may not seem like an immediate safety concern, addressing the AC problem swiftly is crucial for maintaining your vehicle's performance and ensuring your comfort on the road.

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