2011 Mitsubishi Galant AC Isn't Working

Common Causes of AC Failure in Your 2011 Mitsubishi Galant 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 2011 Mitsubishi Galant 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 2011 Mitsubishi Galant?

When diagnosing the AC issue in a 2011 Mitsubishi Galant, start with the simplest checks to avoid unnecessary complications. 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. Following this, examine the compressor for any signs of damage or wear, as it plays a vital role in the AC's operation. Additionally, test the thermostat to ensure it is functioning correctly, as a malfunctioning thermostat can disrupt the entire system. Finally, conduct a thorough visual inspection for any leaks in the AC system, as these can lead to refrigerant loss and diminished cooling performance. By systematically following these steps, you can effectively diagnose the AC issue and determine the necessary repairs to restore comfort in your vehicle.

What are the common problems that could cause the AC to stop working in a 2011 Mitsubishi Galant?

When troubleshooting the air conditioning system in a 2011 Mitsubishi Galant, it's essential to be aware of several common problems that could lead to a malfunction. One of the most frequent culprits is a refrigerant leak, which can occur in various components such as hoses or the compressor, resulting in inadequate cooling. Another critical component to inspect is the compressor itself; if it fails, the AC will struggle to cool the air effectively. Additionally, electrical issues, including blown fuses or faulty relays, can disrupt the AC's operation, so checking the electrical connections is vital. A clogged or blocked condenser can also hinder airflow, preventing the system from cooling properly. Furthermore, a malfunctioning thermostat may cause erratic behavior in the AC system, while a broken blower motor will impede the distribution of cool air throughout the vehicle. By understanding these potential issues, DIY enthusiasts can better diagnose and address the problems affecting their Galant's AC system, ensuring a more comfortable driving experience.

How urgent is it to address the non-functioning AC in a 2011 Mitsubishi Galant?

When faced with a non-functioning AC in your 2011 Mitsubishi Galant, it is crucial to recognize the urgency of the situation. Driving without air conditioning in hot weather can lead to significant discomfort and even health risks, particularly during extreme heat. Moreover, a malfunctioning AC system may signal deeper issues within the vehicle's cooling system, which, if left unaddressed, could result in overheating and serious engine damage. Additionally, if the AC failure is due to a refrigerant leak, it not only compromises the cooling efficiency but also raises environmental concerns. Delaying repairs can lead to escalating costs, as minor issues can develop into major problems over time. Therefore, while it may not seem like an immediate emergency, prioritizing the repair of your AC system is essential for maintaining driving comfort, ensuring vehicle safety, and preventing further damage.

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