2020 Mercedes-Benz GLC63 AMG AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 Mercedes-Benz GLC63 AMG 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 2020 Mercedes-Benz GLC63 AMG 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 steps should I take to diagnose the AC issue in my 2020 Mercedes-Benz GLC63 AMG?

To effectively diagnose the AC issue in your 2020 Mercedes-Benz GLC63 AMG, start by checking the air filters, as clean filters are essential for optimal airflow and cooling performance. Next, inspect the refrigerant levels; low refrigerant can significantly hinder the system's ability to cool. If the refrigerant is adequate, examine the AC compressor for any signs of damage or wear, as a malfunctioning compressor can lead to insufficient cooling. Additionally, test the thermostat to ensure it is operating correctly, since a faulty thermostat can disrupt the entire AC system. It’s also crucial to look for any leaks in the AC system, as these can cause refrigerant loss and affect performance. Finally, check the electrical components, including fuses and relays, to confirm they are functioning properly. By following this diagnostic approach, you can systematically identify and address the AC issues in your vehicle, potentially saving time and money on repairs.

What are the common problems that could cause the AC to stop working in a 2020 Mercedes-Benz GLC63 AMG?

When troubleshooting the air conditioning system in a 2020 Mercedes-Benz GLC63 AMG, it's essential to recognize the common problems that may lead to its failure. One of the primary issues could be low refrigerant levels, which can significantly diminish the cooling performance or even halt it entirely. Additionally, a faulty compressor is another frequent culprit, as it plays a vital role in circulating refrigerant throughout the system. Electrical issues, such as blown fuses or damaged wiring, can also disrupt the AC's functionality, making it essential to check these components. Furthermore, clogged or leaking refrigerant lines can prevent the system from cooling effectively, while a defective condenser may hinder its overall performance. Lastly, if the blower motor is malfunctioning, it can obstruct the flow of cool air into the cabin. Identifying these problems early on can help in addressing the AC issues efficiently, but for a thorough diagnosis and repair, consulting a qualified technician is recommended to ensure optimal performance of your vehicle's AC system.

How urgent is it to address the non-functioning AC in a 2020 Mercedes-Benz GLC63 AMG?

When faced with a non-functioning air conditioning system in your 2020 Mercedes-Benz GLC63 AMG, it is crucial to recognize the urgency of the situation. A malfunctioning AC not only detracts from your driving comfort, especially during sweltering summer months, but it can also pose serious safety risks. High interior temperatures can lead to driver fatigue and impair focus, increasing the likelihood of accidents. Moreover, neglecting the issue can result in further damage to the AC system, leading to more extensive and costly repairs that could affect your vehicle's overall performance. Additionally, maintaining a fully operational AC system is vital for preserving the resale value of your car; potential buyers are more inclined to invest in a vehicle that has all its components functioning properly. Therefore, it is advisable to have your AC system inspected and repaired by a qualified technician without delay to ensure your comfort, safety, and the longevity of your vehicle.

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