2018 Mercedes-Benz GLE550e AC Isn't Working

Common Causes of AC Malfunctions in Your 2018 Mercedes-Benz GLE550e and How to Fix Them

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Reviewed by
Aisha
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 2018 Mercedes-Benz GLE550e 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 steps to diagnose the AC issue in a 2018 Mercedes-Benz GLE550e?

When diagnosing an AC issue in a 2018 Mercedes-Benz GLE550e, start with the simplest checks to avoid unnecessary complications. Begin by inspecting the air filters; clean or replace them if they are clogged, as this can significantly affect airflow and cooling efficiency. Next, verify the refrigerant levels in the system, as low refrigerant can lead to inadequate cooling. If the levels are low, it may indicate a leak that needs to be addressed. Following this, examine the AC compressor for any visible signs of damage or wear, as a malfunctioning compressor can hinder the entire system's performance. Additionally, testing the thermostat is crucial to ensure it is accurately regulating the temperature. Finally, conduct a thorough inspection for any leaks in the AC system, as these can lead to refrigerant loss and diminished cooling capabilities. By systematically following these steps, you can effectively diagnose and potentially resolve AC issues in your vehicle.

What are the common problems that could cause the AC to stop working in a 2018 Mercedes-Benz GLE550e?

When your 2018 Mercedes-Benz GLE550e's air conditioning system stops working, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the first things to check is the refrigerant levels; low refrigerant can significantly impair the system's cooling ability. If the refrigerant is adequate, the next step is to inspect the compressor, as a faulty compressor can prevent the system from circulating refrigerant properly. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the AC's operation, so examining these components is crucial. Clogged or leaking refrigerant lines can also hinder performance, so look for any visible signs of leaks or blockages. Lastly, a defective condenser can impede the heat exchange process, making it essential to ensure that this component is functioning correctly. By systematically checking these areas, you can identify the root cause of the AC failure and take appropriate steps to restore its functionality.

How urgent is it to address the AC failure in a 2018 Mercedes-Benz GLE550e?

When faced with an AC failure in your 2018 Mercedes-Benz GLE550e, it is crucial to act swiftly. The comfort of your passengers is paramount, especially during sweltering summer months or on long journeys where a malfunctioning AC can lead to an unbearable environment. Moreover, delaying repairs can exacerbate the problem, potentially resulting in more severe and costly damage to the AC system. This not only affects the immediate functionality of your vehicle but can also pose safety risks; for instance, a faulty AC can lead to fogged windows, impairing visibility and increasing the likelihood of accidents. Additionally, maintaining a well-functioning AC system is essential for preserving the resale value of your vehicle, as it reflects a commitment to proper maintenance. Therefore, addressing AC issues promptly is not just a matter of comfort but also a critical step in ensuring safety and protecting your investment.

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2018 Mercedes-Benz GLE550e AC Issues: Causes & Solutions