2017 Mitsubishi Outlander AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 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 2017 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 2017 Mitsubishi Outlander?

When your 2017 Mitsubishi Outlander's AC isn't functioning properly, start by checking the thermostat settings to ensure they are correctly adjusted. Sometimes, a simple oversight in temperature settings can lead to cooling problems. Next, inspect the air filters; dirty or clogged filters can significantly restrict airflow, impacting the system's efficiency. If airflow seems adequate, examine the refrigerant levels, as low refrigerant can result in warm air blowing from the vents. Look for any visible signs of leaks, such as oily residue, which can indicate a loss of refrigerant and cooling efficiency. Additionally, pay attention to the AC compressor; listen for unusual noises and visually inspect it for any signs of damage. Finally, check all electrical connections related to the AC system to ensure they are secure and functioning properly, as faulty electrical components can lead to malfunctions. By systematically following these diagnostic steps, you can effectively troubleshoot the AC issues in your Mitsubishi Outlander and determine whether further professional assistance is necessary.

What are the common problems that could cause the AC to stop working in a 2017 Mitsubishi Outlander?

When your 2017 Mitsubishi Outlander's AC system stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is low refrigerant levels, which can significantly hinder the system's cooling efficiency. If the refrigerant is low, it may indicate a leak that needs to be addressed. Another potential issue is a faulty compressor; if the compressor isn't working correctly, it won't circulate the refrigerant, leading to inadequate cooling. Additionally, electrical problems such as blown fuses or damaged wiring can disrupt the AC's operation, so checking these components is essential. A clogged or leaking condenser can also impede airflow and cooling, while malfunctioning cooling fans may prevent the system from dissipating heat effectively. By systematically checking these areas, you can identify and resolve the AC issues in your Outlander, ensuring a comfortable ride.

How urgent is it to address the non-functioning AC in a 2017 Mitsubishi Outlander?

When faced with a non-functioning AC in your 2017 Mitsubishi Outlander, addressing the issue without delay is crucial for both comfort and safety. Driving in high temperatures without a working air conditioning system can lead to significant discomfort and even health risks, particularly for vulnerable passengers. Moreover, a malfunctioning AC may signal deeper issues within the vehicle's cooling system, which, if left unchecked, could result in overheating and severe engine damage. Additionally, a faulty AC compressor can disrupt the performance of other vehicle components, leading to decreased efficiency and potentially more extensive repairs. By prioritizing the repair of your AC system, you not only enhance your driving experience but also safeguard your vehicle's overall health, preventing costly repairs in the future. Taking prompt action ensures a comfortable ride and protects against the risks associated with neglecting these critical symptoms.

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Troubleshooting 2017 Mitsubishi Outlander AC Issues