2018 Dodge Journey AC Isn't Working

Common Causes of AC Failure in Your 2018 Dodge Journey and How to Restore Comfort

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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 2018 Dodge Journey 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 Dodge Journey?

When your 2018 Dodge Journey's AC isn't functioning, start by checking the thermostat settings to ensure they are correctly adjusted to a cool temperature, as incorrect settings can often be the simplest explanation for the issue. Next, inspect the air filters; dirty or clogged filters can significantly restrict airflow, leading to poor AC performance. If the filters are clean, examine the refrigerant levels, as low refrigerant can cause the system to blow warm air. You can use a pressure gauge for this or seek professional help if you're unsure. Additionally, look for any visible signs of leaks in the AC system, such as oily residue around hoses or connections, which can indicate a refrigerant loss. It's also crucial to check the AC compressor to ensure it engages properly when the system is activated; if it doesn't, it may require repair or replacement. Finally, test the electrical components, including fuses and relays, as faulty connections can prevent the AC from operating correctly. By following these steps, you can effectively diagnose and address common AC issues in your vehicle.

What are the common causes for the AC not working in a 2018 Dodge Journey?

When troubleshooting the air conditioning system in a 2018 Dodge Journey, it's important to consider several common problems that could be affecting its performance. One of the first things to check is the refrigerant level; low refrigerant can significantly hinder the system's ability to cool effectively. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can lead to insufficient cooling or complete failure of the AC system. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the operation of the AC, so examining these components is crucial. Clogged or leaking refrigerant lines can also impede cooling, making it essential to look for any visible blockages or leaks. Furthermore, the condition of the condenser and evaporator should be assessed, as damage to these parts can prevent proper heat exchange. Lastly, a malfunctioning blower motor may result in poor airflow, which can further reduce the system's cooling efficiency. By systematically checking these common issues, DIYers can often identify the root cause of the AC malfunction and take appropriate steps to resolve it.

How urgent is it to repair the non-functioning AC in a 2018 Dodge Journey?

Addressing a non-functioning AC in your 2018 Dodge Journey is not just a matter of comfort; it is an urgent necessity that can significantly impact your driving experience and safety. When the AC system fails, it can lead to uncomfortable heat during summer months, making long drives unbearable and distracting you from the road. More critically, a malfunctioning AC can hinder your ability to defog windows, reducing visibility and increasing the risk of accidents. Additionally, neglecting AC issues can lead to more severe problems, such as compressor failure or refrigerant leaks, which can escalate repair costs and compromise the vehicle's overall performance. By prioritizing the repair of your AC system, you not only enhance your comfort and safety but also protect the resale value of your vehicle and prevent further damage that could arise from prolonged neglect. Therefore, it is crucial to address any AC malfunctions promptly to ensure a safe and enjoyable driving experience.

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