2024 Lexus NX450h+ AC Isn't Working

Troubleshooting Common AC Issues in Your 2024 Lexus NX450h+ and Effective Repair Solutions

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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 2024 Lexus NX450h+ 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 best Lexus repair shops?

RepairPal Certified shops can diagnose and repair your 2024 Lexus NX450h+ climate control issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
30 Certified Locations
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Tuffy Tire & Auto Service Center - Grandview

4.7
(85)
2.39 mi
1524 W 5th Ave
Columbus, OH
Open
Closes 5:00 PM
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Excite Auto Repair & Towing

4.4
(15)
5.94 mi
3430 Westerville Road
Columbus, OH
Open
Closes 6:00 PM
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All In Auto Service

4.9
(25)
6.56 mi
5200 Fisher Road
Columbus, OH
Open
Closes 6:00 PM
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Tuffy Tire & Auto Service - Grove City

4.4
(520)
6.67 mi
2131 Stringtown Rd
Grove City, OH
Open
Closes 6:00 PM
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See All 30 Locations

What are the initial steps to diagnose the AC issue in a 2024 Lexus NX450h+?

When diagnosing an AC issue in a 2024 Lexus NX450h+, it's crucial to follow a structured diagnostic approach that begins with the most straightforward checks. Start by inspecting the air filters in the HVAC system, as clean filters are essential for maintaining proper airflow and cooling efficiency. Next, verify the refrigerant levels; low refrigerant can severely impair the AC's cooling capabilities. After that, examine the AC compressor for any visible signs of damage or leaks, which can directly affect its performance. It's also important to test the thermostat to ensure it is functioning correctly and providing accurate temperature readings. Finally, pay attention to any unusual noises or smells emanating from the AC system, as these can signal underlying problems that require further investigation. By systematically addressing these areas, you can effectively diagnose and resolve the AC issues in your Lexus NX450h+.

What are the common problems that could cause the AC to stop working in a 2024 Lexus NX450h+?

When the air conditioning system in your 2024 Lexus NX450h+ stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is refrigerant leaks, which can significantly reduce cooling efficiency. If you notice a lack of cool air, checking for leaks in the refrigerant lines is a good starting point. Another potential issue is a faulty compressor; if the compressor isn't engaging properly, it won't circulate cool air throughout the cabin. Additionally, electrical problems such as blown fuses or faulty relays can disrupt the power supply to the AC components, preventing them from operating correctly. Clogged air filters can also hinder airflow, so ensure they are clean and replaced regularly to maintain optimal performance. A malfunctioning thermostat may cause erratic temperature control, impacting the AC's ability to cool effectively. Lastly, issues with the cooling fans, whether due to a broken motor or relay, can lead to inadequate airflow, further compromising the system's efficiency. By identifying these common problems, you can take the necessary steps to troubleshoot and potentially resolve the AC issues in your Lexus NX450h+.

How urgent is it to repair the non-functioning AC in a 2024 Lexus NX450h+?

Addressing a non-functioning AC in your 2024 Lexus NX450h+ is not just a matter of comfort; it is a pressing concern that can significantly impact your driving experience and safety. The discomfort of a hot vehicle can detract from your focus on the road, especially during long drives or in extreme heat, where the risk of heat-related illnesses increases. Moreover, a malfunctioning AC system may indicate underlying mechanical issues that could escalate into more severe and costly repairs if left unattended. Additionally, maintaining a fully operational AC system is essential for preserving your vehicle's resale value; potential buyers are likely to be deterred by a vehicle that lacks a functioning climate control system. Therefore, it is crucial to prioritize the repair of your AC to ensure a safe, comfortable, and valuable driving experience.

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