2017 Subaru Outback AC Isn't Working

Common Causes of AC Failure in Your 2017 Subaru Outback and How to Restore Comfort

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Reviewed by
Aisha
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 Subaru Outback 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 2017 Subaru Outback?

To effectively diagnose an AC issue in your 2017 Subaru Outback, start with the simplest checks that can often reveal the problem without extensive tools or expertise. Begin by inspecting the air filters, as clogged cabin and engine air filters can significantly hinder airflow and reduce AC efficiency. Next, assess the refrigerant levels using a gauge; low levels may indicate a leak or other underlying issues that require attention. Pay close attention to the AC compressor while the system is running; any unusual noises could signal a malfunction that needs to be addressed. Additionally, ensure that the AC controls are functioning correctly, as electrical problems can disrupt the system's operation. Finally, visually inspect the AC components for any signs of leaks, such as oily residue, which can lead to refrigerant loss and diminished performance. By following these initial steps, you can systematically identify the root cause of the AC issue and determine the best course of action for repairs.

What are the common problems that could cause the AC system to stop working in a 2017 Subaru Outback?

When the AC system in a 2017 Subaru Outback ceases to function, it can be frustrating, but understanding the common problems can empower you to troubleshoot effectively. One of the primary culprits is low refrigerant levels, which can significantly impair the system's cooling ability. If the refrigerant is low, it may indicate a leak that needs to be addressed. Another frequent issue is related to the compressor; a faulty clutch or complete compressor failure can prevent the system from circulating refrigerant properly. Additionally, electrical problems, such as blown fuses or damaged wiring, can disrupt the AC's operation, making it essential to check these components. Clogged or leaking refrigerant lines can also hinder performance, as blockages prevent the refrigerant from flowing smoothly. Furthermore, if the cooling fans are not functioning correctly, airflow through the condenser may be inadequate, leading to poor cooling. Lastly, a malfunctioning thermostat can disrupt temperature regulation, causing the AC system to underperform. By being aware of these common issues, you can take proactive steps to maintain your vehicle's AC system and ensure it operates efficiently.

How urgent is it to address the non-functioning AC in a 2017 Subaru Outback?

When faced with a non-functioning AC in your 2017 Subaru Outback, it is crucial to recognize the urgency of the situation. A malfunctioning AC not only compromises your comfort during hot weather but can also pose significant safety risks. Extreme heat can distract drivers and lead to impaired focus, increasing the likelihood of accidents. Moreover, prolonged exposure to high temperatures inside the vehicle can result in serious health issues, such as heat exhaustion or dehydration, particularly for vulnerable passengers like children or the elderly. Additionally, neglecting AC repairs can adversely affect your vehicle's resale value, as potential buyers often look for well-maintained systems. Therefore, addressing AC issues promptly is essential to ensure a safe, comfortable, and healthy driving experience while also protecting your investment in the vehicle.

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