2017 INFINITI QX70 AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 INFINITI QX70 and How to Resolve 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 2017 INFINITI QX70 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 INFINITI QX70?

When your 2017 INFINITI QX70's AC isn't functioning properly, start by checking the AC controls to ensure they are set correctly, as incorrect settings can often be the simplest explanation for the problem. Next, inspect the fuse box for any blown fuses related to the AC system; replacing a blown fuse with one of the same amperage can sometimes restore functionality. Pay attention to any unusual noises when the AC is activated, as these sounds may indicate issues with the compressor or blower motor. Additionally, look for signs of refrigerant leaks, such as oily residue around hoses and connections, since low refrigerant levels can significantly impact cooling performance. If the problem persists, use a multimeter to test the compressor's operation; if it fails to engage, replacement may be necessary. If these steps do not resolve the issue, it may be time to consult a professional mechanic or HVAC technician for a more thorough diagnosis and repair.

What are the common problems that could cause the AC to stop working in a 2017 INFINITI QX70?

When the air conditioning system in your 2017 INFINITI QX70 ceases to function, it can be frustrating, especially during hot weather. One of the most frequent culprits is low refrigerant levels, which can occur due to leaks or insufficient charging, leading to inadequate cooling. Another common issue is a faulty compressor; if the compressor is not engaging properly, the system will fail to circulate refrigerant, resulting in no cool air. Electrical problems, such as blown fuses or damaged wiring, can also disrupt the AC's operation, making it essential to check these components. Additionally, clogged or leaking refrigerant lines can prevent the system from maintaining the necessary pressure, further impairing performance. Lastly, issues with the condenser or evaporator can hinder the cooling process, as these components are crucial for heat exchange. By understanding these common problems, DIYers can take the first steps toward troubleshooting and potentially resolving AC issues in their vehicle.

How urgent is it to address the AC failure in my 2017 INFINITI QX70?

Addressing the AC failure in your 2017 INFINITI QX70 is crucial for several reasons. First and foremost, a functioning air conditioning system is vital for maintaining a comfortable driving environment, particularly during hot weather or long trips. Without it, you and your passengers may experience discomfort, which can detract from the overall driving experience. Moreover, neglecting an AC issue can lead to serious safety concerns. For instance, if the AC compressor fails, it could result in engine overheating or belt failure, jeopardizing the vehicle's performance and safety. Timely repairs not only enhance your comfort and safety but also serve as preventive maintenance, helping to avoid more extensive and costly repairs in the future. Additionally, keeping your AC system in good working order can positively influence the resale value of your vehicle. Potential buyers are likely to be deterred by a malfunctioning AC system, so addressing the issue promptly can help preserve the value of your INFINITI QX70. In summary, while it may not seem like an emergency, the urgency of resolving AC failure cannot be overstated, as it impacts your comfort, safety, and the long-term health of your vehicle.

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.