2012 Mitsubishi Outlander AC Isn't Working

Common Causes of AC Failure in Your 2012 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 2012 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 steps to diagnose the AC issue in a 2012 Mitsubishi Outlander?

When tackling an AC issue in your 2012 Mitsubishi Outlander, it's essential to adopt a systematic diagnostic approach that starts with the simplest checks. Begin by inspecting the air filters, as dirty or clogged filters can significantly hinder airflow and reduce the system's efficiency. Next, assess the refrigerant levels; low levels may suggest a leak, which is critical to address for optimal cooling performance. Following this, examine the AC compressor, as a malfunctioning compressor can lead to inadequate cooling. Additionally, inspect the condenser for any signs of damage, as it is vital for dissipating heat from the refrigerant. Be vigilant for any visible leaks, such as oily residues, which can indicate refrigerant loss. Finally, check the electrical components, ensuring all connections are secure and that relays or fuses are functioning correctly. By methodically following these steps, you can effectively diagnose the AC issue and take the necessary actions to restore comfort in your vehicle.

What are the common problems that could cause the AC to stop working in a 2012 Mitsubishi Outlander?

When the air conditioning system in a 2012 Mitsubishi Outlander ceases to function, it can be frustrating, especially during hot weather. One of the most frequent culprits is low refrigerant levels, which can occur due to leaks or insufficient charging, preventing the system from cooling the air effectively. Another common issue is a faulty compressor; if the compressor is not engaging or is damaged, it will fail to circulate refrigerant, leading to inadequate cooling. Electrical problems, such as blown fuses or faulty wiring, can also disrupt the AC's operation, making it essential to check these components. Additionally, a clogged or leaking condenser can hinder the system's ability to dissipate heat, while malfunctioning cooling fans can prevent proper airflow, further exacerbating cooling issues. By understanding these potential problems, DIYers can systematically diagnose and address the AC issues in their Mitsubishi Outlander, restoring comfort to their driving experience.

How urgent is it to repair the non-functioning AC in a 2012 Mitsubishi Outlander?

Repairing the non-functioning AC in a 2012 Mitsubishi Outlander is an urgent matter that should not be overlooked. The discomfort of driving without air conditioning, especially during sweltering summer months, can make even short trips unbearable. More critically, a malfunctioning AC can compromise safety; extreme heat can lead to driver fatigue and decreased alertness, increasing the risk of accidents. Additionally, neglecting AC repairs can diminish the vehicle's resale value, as prospective buyers often view a well-functioning AC as a key feature. Furthermore, delaying repairs may result in more severe mechanical issues, leading to costly repairs down the line. Therefore, addressing AC problems promptly is essential not only for immediate comfort but also for ensuring safety, maintaining vehicle value, and preventing further complications.

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2012 Mitsubishi Outlander AC Not Working: Causes & Repairs