2012 Jeep Grand Cherokee AC Isn't Working

Common Causes of AC Failure in Your 2012 Jeep Grand Cherokee 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 Jeep Grand Cherokee 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 2012 Jeep Grand Cherokee?

When faced with an AC malfunction in a 2012 Jeep Grand Cherokee, it's essential to adopt a methodical diagnostic approach to identify the root cause of the issue. Start with a thorough visual inspection of the AC components, looking for any obvious signs of wear or damage. Next, check if the A/C compressor is operational, as this is crucial for the system's functionality. To maintain the compressor's health, it's advisable to run the AC at maximum fan speed and the lowest temperature for at least 10-15 minutes weekly. This practice helps keep the system lubricated and functioning properly. Following this, test the AC system pressure to check for leaks or other problems. If you suspect refrigerant leaks, inspect O-ring seals, the condenser, evaporator core, and hoses for any signs of damage. By following these steps in a logical order, you can effectively diagnose and address the AC issues in your Jeep, potentially saving time and money on repairs.

What are the common problems that could cause the AC to stop working in a 2012 Jeep Grand Cherokee?

When the air conditioning system in a 2012 Jeep Grand Cherokee fails to deliver cool air, several common problems may be at play. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the system's cooling capabilities. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can prevent the system from functioning altogether. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the AC's operation, so examining these components is crucial. Another potential issue is a clogged or leaking condenser, which can severely impact the system's efficiency. Lastly, ensure that the cooling fans are operational, as malfunctioning fans can lead to inadequate air circulation and cooling. By systematically checking these common problems, DIYers can often identify the root cause of the AC failure and take appropriate action to restore comfort in their vehicle.

How urgent is it to address the non-functioning AC in a 2012 Jeep Grand Cherokee?

When faced with a non-functioning air conditioning system in a 2012 Jeep Grand Cherokee, it is crucial to recognize the urgency of the situation. While it may not seem like an immediate emergency, the lack of a working AC can significantly affect the comfort of both the driver and passengers, especially during hot weather. Prolonged exposure to high temperatures inside the vehicle can lead to discomfort and fatigue, which may impair driving performance and increase the risk of heat-related illnesses. Moreover, neglecting the issue can result in further damage to the AC system, leading to more extensive repairs and higher costs down the line. Additionally, a well-functioning AC system contributes to the overall resale value of the vehicle; potential buyers are likely to be deterred by a malfunctioning AC. Therefore, addressing the issue promptly not only enhances driving comfort and safety but also protects your investment in the long run.

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2012 Jeep Grand Cherokee AC Not Working | RepairPal