2017 Subaru Forester AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 Subaru Forester and How to Fix Them

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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 Forester 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 2017 Subaru Forester?

When your 2017 Subaru Forester's AC isn't functioning properly, start by checking the thermostat settings to ensure they are correctly adjusted to a cool temperature. If the settings are fine, inspect the air filters for dirt or clogs, as these can significantly restrict airflow and hinder cooling performance. Next, examine the refrigerant levels using a pressure gauge; low levels often result in warm air blowing from the vents, so consider adding refrigerant if necessary. Additionally, look for any visible leaks in the AC system, as these can lead to refrigerant loss and should be addressed immediately. Pay attention to the AC compressor, listening for unusual noises and confirming that it engages properly, as it plays a crucial role in cooling the air. Finally, check the electrical connections related to the AC system for security and signs of corrosion, as faulty connections can disrupt functionality. By systematically following these steps, you can effectively diagnose and potentially resolve the AC issues in your Subaru Forester.

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

When troubleshooting the air conditioning system in a 2017 Subaru Forester, it's crucial to understand the common problems that could lead to a malfunction. One of the primary issues is refrigerant leaks, which can significantly reduce the system's efficiency and cooling capability. Additionally, a faulty compressor may fail to circulate refrigerant properly, resulting in inadequate cooling. Electrical issues, such as blown fuses or damaged wiring, can also disrupt the AC's operation, preventing it from functioning altogether. Another potential culprit is a clogged or blocked condenser, which can impede airflow and hinder the cooling process. Furthermore, a malfunctioning thermostat may not accurately regulate the temperature, affecting overall performance. Lastly, broken cooling fans can lead to overheating, further compromising the AC system's effectiveness. Identifying and addressing these issues promptly is essential for restoring the AC's functionality, and while some DIY fixes may be possible, consulting a qualified technician is often recommended for a thorough diagnosis and repair.

How urgent is it to repair the non-functioning AC in a 2017 Subaru Forester?

When faced with a non-functioning AC in your 2017 Subaru Forester, the urgency of repair cannot be overstated. A well-functioning AC system is essential for maintaining a comfortable driving environment, particularly during sweltering summer months or on long journeys. Beyond comfort, the safety implications are significant; extreme heat can lead to driver distraction and discomfort, which may compromise focus on the road. Additionally, a malfunctioning AC can detract from your vehicle's resale value, as prospective buyers often prioritize a fully operational climate control system. Ignoring AC issues can also result in further damage, leading to more extensive and costly repairs in the future. Therefore, addressing AC problems promptly is crucial not only for immediate comfort and safety but also for the long-term health of your vehicle and its market value.

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