2018 Kia Soul AC Isn't Working

Common Causes of AC Malfunctions in Your 2018 Kia Soul and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2018 Kia Soul 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 2018 Kia Soul?

When your 2018 Kia Soul's AC isn't functioning properly, start by checking the thermostat settings to ensure they are correctly adjusted. Sometimes, the simplest solution is just a matter of incorrect settings. Next, inspect the air filters; dirty or clogged filters can significantly hinder airflow, so replacing them can often restore AC performance. If the issue persists, examine the refrigerant levels, as low levels can lead to warm air blowing from the vents. You can use a pressure gauge for this or seek professional help if you're unsure. Additionally, look for any signs of leaks in the AC system, such as oily residue around hoses or connections, which can indicate refrigerant loss. It's also crucial to check the AC compressor to ensure it engages when the system is activated, as a malfunctioning compressor can prevent cooling. Lastly, inspect the electrical components, including fuses and relays, as faulty connections can disrupt the AC's operation. By following these steps, you can effectively diagnose and potentially resolve the AC issues in your Kia Soul, saving time and money on repairs.

What are the common problems that could cause the AC to stop working in a 2018 Kia Soul?

When your 2018 Kia Soul's AC stops working, it's essential to understand the common problems that could be at play. One of the most frequent culprits is low refrigerant levels, which can hinder the system's ability to cool effectively. If the refrigerant is low, it may indicate a leak that needs to be addressed. Another potential issue is a faulty compressor; this component is crucial for circulating refrigerant throughout the system, and if it fails, the AC will not produce cold air. Additionally, electrical problems such as blown fuses or damaged wiring can disrupt the AC's operation, leading to a complete system failure. A clogged or leaking condenser can also impede the cooling process, as it plays a vital role in dissipating heat from the refrigerant. Lastly, a malfunctioning blower motor can result in insufficient airflow from the vents, making it feel like the AC isn't working at all. By diagnosing these issues, you can take the necessary steps to restore your vehicle's AC functionality, whether through DIY repairs or seeking professional assistance.

How urgent is it to repair the non-functioning AC in a 2018 Kia Soul?

Repairing the non-functioning AC in a 2018 Kia Soul is an urgent matter that should not be overlooked. The discomfort of driving without air conditioning, especially during sweltering summer months, can significantly detract from the overall driving experience. Moreover, a malfunctioning AC can lead to poor air quality inside the vehicle, which poses health risks to passengers, particularly those with respiratory issues. Beyond immediate comfort and health concerns, neglecting AC repairs can adversely affect the vehicle's resale value; prospective buyers are likely to be deterred by a non-functional AC system, viewing it as a sign of poor maintenance. Additionally, delaying repairs can result in more severe damage to the AC system or related components, leading to costlier repairs down the line. Therefore, addressing AC issues promptly is essential for ensuring a comfortable, healthy, and valuable driving experience.

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