2018 Mercedes-Benz AMG GT R AC Isn't Working

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

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Reviewed by
Andrew Hajjar
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 AMG GT R 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 steps to diagnose the AC issue in a 2018 Mercedes-Benz AMG GT R?

To effectively diagnose the AC issue in your 2018 Mercedes-Benz AMG GT R, start by checking the air filters, as clean filters are essential for optimal airflow and cooling performance. If the filters are dirty or clogged, replace them to improve efficiency. Next, inspect the refrigerant levels; low refrigerant can significantly hinder cooling, so ensure they are within the recommended range. Following this, examine the AC compressor for any visible signs of damage or wear, as a malfunctioning compressor can lead to inadequate cooling. It’s also crucial to test the thermostat to confirm it is operating correctly, as a faulty thermostat can disrupt the entire AC system. Additionally, check for any leaks in the AC system, as these can cause refrigerant loss and affect performance. Don’t forget to evaluate the electrical components, including fuses and relays, to ensure they are functioning properly. Finally, performing a system pressure test can provide a comprehensive overview of the AC system's health, helping you identify any underlying issues. By following this structured approach, you can systematically diagnose and address AC problems in your vehicle, ensuring a comfortable driving experience.

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

When diagnosing why the AC in a 2018 Mercedes-Benz AMG GT R has stopped working, it's essential to consider several common problems that could be at play. One of the most frequent culprits is a refrigerant leak, which can occur in various components such as the compressor, condenser, or hoses, leading to diminished cooling efficiency. Another critical component to examine is the compressor itself; if it fails due to wear, electrical issues, or inadequate maintenance, the entire AC system will be compromised. Additionally, electrical problems, including faulty relays or blown fuses, can disrupt the AC's operation, making it crucial to check the vehicle's electrical system. A clogged expansion valve can also hinder refrigerant flow, resulting in poor cooling performance. Lastly, if the blower motor is malfunctioning, it will prevent cool air from circulating into the cabin, further exacerbating the issue. By understanding these potential problems, DIY enthusiasts can better troubleshoot and address AC issues in their Mercedes-Benz AMG GT R.

How urgent is it to address the non-functioning AC in a 2018 Mercedes-Benz AMG GT R?

Addressing a non-functioning AC in a 2018 Mercedes-Benz AMG GT R is of utmost urgency due to several critical factors. First and foremost, the comfort of both the driver and passengers is significantly compromised without a functioning air conditioning system, especially during hot weather or extended drives. The interior can quickly become uncomfortably warm, leading to an unpleasant driving experience. Moreover, the safety implications cannot be overlooked; extreme heat can cause driver fatigue and reduced concentration, increasing the risk of accidents. Additionally, neglecting the AC issue may lead to further complications within the system, resulting in more extensive and costly repairs down the line. Therefore, it is essential to prioritize the inspection and repair of the AC system to ensure a safe and comfortable driving environment, ultimately preserving the vehicle's integrity and performance.

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