2017 Mercedes-Benz GLE300d AC Isn't Working

Common Causes of AC Malfunctions in Your 2017 Mercedes-Benz GLE300d and How to Fix Them

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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 GLE300d 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 GLE300d?

When your 2017 Mercedes-Benz GLE300d's AC isn't functioning properly, starting with a systematic diagnostic approach can save you time and money. Begin by checking the thermostat settings to ensure they are correctly adjusted; sometimes, a simple oversight can lead to perceived AC issues. Next, inspect the air filters for dirt and clogs, as these can significantly restrict airflow and diminish cooling efficiency. If airflow seems adequate, examine the refrigerant levels using a pressure gauge; low levels often result in warm air blowing from the vents, and you may need to add refrigerant while also checking for any leaks that could have caused the depletion. Look for oily residues around hoses and connections, which can indicate leaks that need immediate attention. Additionally, listen for unusual noises from the AC compressor when it’s running, as this component is crucial for the system's operation and may require professional evaluation if problems are detected. Lastly, verify that all electrical connections related to the AC system are secure and free from corrosion, as faulty connections can disrupt functionality. By following these steps, you can effectively diagnose and potentially resolve common AC issues in your vehicle before deciding to consult a mechanic.

What are the common problems that could cause the AC system to stop working in a 2017 Mercedes-Benz GLE300d?

When troubleshooting the AC system in a 2017 Mercedes-Benz GLE300d, it's essential to be aware of several common problems that could lead to system failure. One of the primary culprits is refrigerant leaks, which can significantly reduce the system's cooling efficiency. If you notice a lack of cold air, checking for leaks should be your first step. Another frequent issue is a faulty compressor; if the compressor is not functioning correctly, the AC may not cool at all. Additionally, electrical problems, such as blown fuses or damaged wiring, can disrupt the system's operation, so inspecting these components is crucial. A clogged or blocked condenser can also hinder the heat exchange process, resulting in poor cooling performance. Furthermore, a malfunctioning thermostat may fail to regulate the temperature effectively, impacting overall system performance. Lastly, if the blower motor is not working, the cooled air won't circulate properly, leading to inadequate cooling. By understanding these common issues, DIY enthusiasts can better diagnose and address AC problems in their vehicles, potentially saving on repair costs and restoring comfort.

How urgent is it to address the non-functioning AC in a 2017 Mercedes-Benz GLE300d?

Addressing a non-functioning AC in a 2017 Mercedes-Benz GLE300d is crucial for several reasons. First and foremost, the comfort of both the driver and passengers can be significantly compromised, especially during hot weather or long journeys. A malfunctioning AC can lead to an uncomfortably warm cabin, which not only detracts from the driving experience but can also distract the driver. Moreover, safety is a paramount concern; extreme heat can lead to fatigue and impair the driver's focus, increasing the risk of accidents. Additionally, neglecting the AC issue can result in further damage to the system, leading to more extensive repairs and higher costs in the future. Lastly, maintaining a fully operational AC system is essential for preserving the resale value of your vehicle. A well-maintained car is more appealing to potential buyers, making it imperative to address any AC issues promptly. In summary, while it may not seem like an emergency, the urgency of fixing a non-functioning AC system should not be underestimated, as it directly impacts comfort, safety, potential repair costs, and the vehicle's overall value.

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