2015 Lincoln MKX AC Isn't Working

Common Causes of AC Malfunctions in Your 2015 Lincoln MKX and How to Fix Them

Find Repair Location
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 2015 Lincoln MKX 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 steps to diagnose the AC issue in a 2015 Lincoln MKX?

To effectively diagnose an AC issue in a 2015 Lincoln MKX, it is essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the air filters, as both the cabin and engine air filters must be clean to ensure optimal airflow and AC performance. Next, assess the refrigerant levels using a gauge; low levels can indicate a leak or other issues that need to be addressed. Examine the AC compressor for any signs of damage or wear, as a malfunctioning compressor can significantly impair cooling efficiency. It’s also important to verify that the AC controls on the dashboard are functioning correctly, since any malfunction here can disrupt the entire system's operation. Additionally, check for visible leaks around connections, as these can lead to refrigerant loss and reduced cooling capacity. Inspect the AC condenser for any debris or damage, as this component is crucial for the system's efficiency. Finally, perform a system pressure test to identify any deviations in pressure levels, which can signal underlying problems. By following this structured diagnostic approach, you can effectively pinpoint and address the root causes of any cooling issues in your vehicle's AC system.

What are the common problems that could cause the AC to stop working in a 2015 Lincoln MKX?

When the air conditioning system in a 2015 Lincoln MKX fails to cool, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary issues could be low refrigerant levels, which can occur due to leaks or insufficient charging, preventing the system from achieving optimal cooling. Another frequent culprit is the compressor; if it malfunctions or fails, the entire AC system may cease to function properly. Additionally, the condenser can be a source of trouble, as blockages or physical damage can hinder airflow and cooling efficiency. Electrical issues, such as faulty wiring or blown fuses, can also disrupt the AC system's operation, making it essential to check these components. A malfunctioning thermostat may fail to regulate the temperature correctly, leading to inadequate cooling, while a cooling fan that does not operate as intended can further exacerbate the problem. By identifying these common issues, DIYers can take the first steps toward diagnosing and potentially resolving the air conditioning problems in their Lincoln MKX.

How urgent is it to address the non-functioning AC in a 2015 Lincoln MKX?

Addressing a non-functioning AC in your 2015 Lincoln MKX is crucial for maintaining both comfort and safety while driving. If your AC is blowing warm air, it could indicate low refrigerant levels, a malfunctioning compressor, or dirty coils, all of which can lead to more significant issues if left unattended. Additionally, if there is no airflow at all, a faulty blower motor may be to blame, which can compromise your ability to regulate cabin temperature effectively. Ignoring these symptoms not only diminishes your driving experience, especially during hot weather, but it can also lead to more extensive and costly repairs down the line. Therefore, it is essential to diagnose and address any AC issues promptly to ensure your vehicle operates optimally and to avoid discomfort or safety risks while on the road.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2015 Lincoln MKX AC Issues: Common Problems & Repair Costs