2020 Mitsubishi Mirage G4 AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 Mitsubishi Mirage G4 and How to Fix Them

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Reviewed by
Devin Cabugcal
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 Mitsubishi Mirage G4 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 steps to diagnose the AC issue in a 2020 Mitsubishi Mirage G4?

When diagnosing an AC issue in your 2020 Mitsubishi Mirage G4, start with the simplest checks to ensure a systematic approach. Begin by inspecting the air filters; clean or replace them if they are clogged, as this can significantly impact airflow and cooling efficiency. Next, verify the refrigerant levels in the system, as low levels can lead to inadequate cooling. If the refrigerant is low, it may indicate a leak that needs addressing. Following this, examine the AC compressor for any visible damage or leaks, as a malfunctioning compressor can severely affect performance. Additionally, test the thermostat to confirm it is accurately reading the vehicle's interior temperature, as a faulty thermostat can disrupt the cooling cycle. Lastly, conduct a thorough visual inspection for any leaks in the AC system, as these can lead to refrigerant loss and diminished cooling capabilities. By methodically following these steps, you can effectively diagnose and potentially resolve the AC issues in your Mitsubishi Mirage G4.

What are the common problems that could cause the AC to stop working in a 2020 Mitsubishi Mirage G4?

When troubleshooting the air conditioning system in a 2020 Mitsubishi Mirage G4, it's essential to understand the common problems that could lead to a malfunction. One prevalent issue is a refrigerant leak, which can occur due to damaged components or seals, preventing the AC from cooling effectively. Another critical factor is the compressor; if it fails, the system cannot circulate refrigerant, resulting in inadequate cooling. Additionally, electrical issues such as blown fuses or faulty relays can disrupt the AC's operation, leading to complete failure. A clogged air filter can also hinder airflow, diminishing the system's efficiency and cooling performance. Lastly, a broken thermostat may prevent the AC from regulating temperature properly, causing it to malfunction. By identifying these potential issues, DIY enthusiasts can better diagnose and address the problems affecting their vehicle's air conditioning system.

How urgent is it to repair the non-functioning AC in a 2020 Mitsubishi Mirage G4?

When faced with a non-functioning AC in your 2020 Mitsubishi Mirage G4, the urgency of repair cannot be overstated. A reliable air conditioning system is crucial for maintaining a comfortable driving environment, particularly during sweltering summer months. Beyond mere comfort, a malfunctioning AC can compromise the air quality within the vehicle, potentially exacerbating health issues for occupants, especially those with respiratory conditions. Additionally, neglecting AC repairs can adversely affect the vehicle's resale value, as prospective buyers often view a fully operational AC as a non-negotiable feature. Furthermore, delaying repairs may lead to more severe damage within the AC system, resulting in higher repair costs in the future. Therefore, addressing AC issues promptly is essential not only for immediate comfort and health but also for the long-term well-being of your vehicle and its value.

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