2019 Mitsubishi Outlander AC Isn't Working

Common Causes of AC Malfunctions in Your 2019 Mitsubishi Outlander 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 2019 Mitsubishi Outlander 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 Outlander?

When your 2019 Mitsubishi Outlander's AC isn't functioning, start by checking the thermostat settings to ensure they are correctly adjusted. Sometimes, a simple oversight in temperature or mode can lead to cooling issues. Next, inspect the air filters; if they are dirty or clogged, they can significantly restrict airflow, impacting the AC's performance. If the filters are clean, examine the refrigerant levels, as low refrigerant can cause the system to blow warm air. If you suspect a refrigerant issue, it's advisable to have a professional check and recharge the system if necessary. Additionally, look for any visible signs of leaks, such as oily residue around hoses or connections, which can indicate a loss of refrigerant. Testing the compressor is also crucial; it should engage when the AC is turned on, and if it doesn't, it may require repair or replacement. Lastly, inspect the electrical connections related to the AC system for any loose or damaged wires, as faulty connections can prevent the system from operating correctly. By following these steps, you can effectively diagnose and address common AC issues in your Mitsubishi Outlander.

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

When the air conditioning system in your 2019 Mitsubishi Outlander ceases to function, it can be frustrating, especially during hot weather. One of the most frequent issues is low refrigerant levels, which can occur due to leaks or insufficient charging, preventing the system from cooling effectively. Another common culprit is a faulty compressor; if the compressor is not engaging properly, the AC will not produce cold air. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the system's operation, leading to a complete failure of the AC. Clogged or leaking condensers can also hinder the cooling process, as they are essential for dissipating heat from the refrigerant. Lastly, a malfunctioning thermostat may fail to regulate the temperature accurately, further impacting the AC's performance. By understanding these common problems, you can take proactive steps to troubleshoot and maintain your vehicle's air conditioning system, ensuring it remains in optimal working condition.

How urgent is it to repair the AC system in a 2019 Mitsubishi Outlander that isn't working?

When the AC system in your 2019 Mitsubishi Outlander is malfunctioning, the urgency of repair cannot be overstated. A functioning AC is essential for maintaining a comfortable driving environment, especially during sweltering summer months. Beyond comfort, a faulty AC can compromise air quality, posing health risks to passengers, particularly those with respiratory conditions. Additionally, neglecting AC issues can lead to more severe problems, resulting in costly repairs that could have been avoided with timely intervention. The current season also plays a crucial role; in hot climates, the need for a working AC becomes even more pressing. Furthermore, a well-maintained AC system can enhance your vehicle's resale value, making it a wise investment to address any issues as soon as they arise. Therefore, if you notice any signs of AC failure, it is advisable to seek professional inspection and repair to ensure your vehicle remains safe, comfortable, and valuable.

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