2017 Mercedes-Benz GLE350 AC Isn't Working

Troubleshooting Common AC Issues in Your 2017 Mercedes-Benz GLE350 and How to Restore Comfort

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Reviewed by
Bo Fader
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 Mercedes-Benz GLE350 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 Mercedes-Benz GLE350?

When your 2017 Mercedes-Benz GLE350's AC isn't functioning, start by checking the thermostat settings to confirm they are correctly adjusted. A simple misconfiguration can often be the culprit. Next, inspect the air filters; if they are dirty or clogged, replacing them can significantly improve airflow and AC performance. It's also essential to examine the refrigerant levels, as low levels can lead to warm air blowing from the vents. If you suspect a refrigerant issue, consider having a professional assess and refill it if necessary. Additionally, look for any visible leaks in the AC system, such as oily residue around hoses or connections, which can indicate a refrigerant loss. Testing the compressor is another critical step; ensure it engages when the AC is activated, as a malfunctioning compressor may require repair or replacement. Lastly, check the electrical connections related to the AC system for security and corrosion, as faulty connections can hinder performance. By systematically addressing these areas, you can effectively diagnose and potentially resolve the AC issues in your vehicle.

What are the common problems that could cause the AC system to stop working in a 2017 Mercedes-Benz GLE350?

When tackling AC system issues in a 2017 Mercedes-Benz GLE350, it's essential to understand the common problems that may arise. One prevalent issue is refrigerant leaks, which can significantly diminish cooling efficiency. If you notice a lack of cold air, checking for leaks in the refrigerant lines is a good starting point. Another critical component to inspect is the compressor; if it’s not functioning correctly, the entire AC system may fail to operate. Electrical problems, such as blown fuses or faulty wiring, can also disrupt the system, so examining the electrical connections is advisable. Additionally, a clogged expansion valve or orifice tube can impede refrigerant flow, leading to inadequate cooling. Lastly, ensure the blower motor is operational, as a malfunction here can result in poor airflow, even if the AC is engaged. By systematically checking these components, DIYers can effectively diagnose and potentially resolve AC issues in their GLE350.

How urgent is it to address the AC failure in my 2017 Mercedes-Benz GLE350?

Addressing the AC failure in your 2017 Mercedes-Benz GLE350 is crucial for several reasons. First and foremost, a functioning air conditioning system is essential for maintaining comfort during your drives, particularly in hot weather or on long trips. Without it, you may find yourself in an increasingly uncomfortable situation, which can detract from your overall driving experience. Moreover, the safety implications cannot be overlooked; a malfunctioning AC can lead to excessive heat buildup inside the vehicle, posing a risk to both the driver and passengers. This is especially critical during extreme weather conditions, where overheating can lead to serious health concerns. Additionally, neglecting AC issues can result in further damage to the system, potentially leading to more extensive and costly repairs in the future. By addressing the problem promptly, you not only safeguard your vehicle's performance but also help preserve its resale value. A well-maintained AC system contributes to the overall condition of your vehicle, making it more appealing to future buyers. Therefore, while it may not seem like an immediate emergency, taking swift action on AC failures is advisable to ensure comfort, safety, and the longevity of your vehicle.

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