2015 Mitsubishi Lancer AC Isn't Working

Common Causes of AC Failure in Your 2015 Mitsubishi Lancer 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 2015 Mitsubishi Lancer 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 2015 Mitsubishi Lancer?

To effectively diagnose the AC issue in your 2015 Mitsubishi Lancer, start by checking the air filters, as clean filters are crucial for proper airflow and cooling efficiency. Next, inspect the refrigerant levels; low refrigerant can significantly impair the system's ability to cool. Following this, examine the AC compressor for any visible damage or leaks, as these can directly affect its performance. Additionally, testing the thermostat is important to ensure it is accurately regulating the temperature and communicating with the AC system. Lastly, conduct a thorough inspection for any leaks in the AC system, as these can lead to refrigerant loss and diminished cooling capabilities. By systematically addressing these areas, you can pinpoint the issue and take the necessary steps to restore your vehicle's air conditioning functionality.

What are the common problems that could cause the AC to stop working in a 2015 Mitsubishi Lancer?

When the air conditioning system in your 2015 Mitsubishi Lancer 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 the air effectively. Another common culprit is a faulty compressor; if the compressor is not engaging or is damaged, it will fail to circulate refrigerant, leading to a lack of cooling. Additionally, electrical problems such as blown fuses, malfunctioning relays, or damaged wiring can disrupt the AC's operation, making it essential to check these components. A clogged or leaking condenser can also hinder the system's ability to dissipate heat, while malfunctioning cooling fans may not provide adequate airflow, further compromising the AC's performance. By understanding these common problems, you can take the first steps toward diagnosing and potentially fixing the AC issues in your Mitsubishi Lancer.

How urgent is it to repair the non-functioning AC in a 2015 Mitsubishi Lancer?

When faced with a non-functioning AC in your 2015 Mitsubishi Lancer, the urgency to address the issue cannot be overstated. A reliable air conditioning system is crucial for maintaining comfort during hot weather, making long drives more enjoyable and less taxing. Moreover, the absence of a functioning AC can lead to distractions that compromise your safety on the road, as discomfort can divert your attention from driving. Additionally, if you plan to sell your vehicle in the future, a well-maintained AC system can significantly enhance its resale value, making it more appealing to potential buyers. Ignoring AC problems can also result in more severe issues down the line, leading to costly repairs that could have been avoided with timely intervention. Therefore, it is essential to prioritize the repair of your AC system not only for immediate comfort and safety but also for the long-term health and value of your vehicle.

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