2015 Mercedes-Benz GL63 AMG AC Isn't Working

Common Causes of AC Malfunctions in Your 2015 Mercedes-Benz GL63 AMG and How to Fix Them

Find Repair Location
Reviewed by
Devin Cabugcal
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 2015 Mercedes-Benz GL63 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 are the initial diagnostic steps to take when the AC isn't working in a 2015 Mercedes-Benz GL63 AMG?

When faced with an AC malfunction in your 2015 Mercedes-Benz GL63 AMG, start by checking the thermostat settings to ensure they are correctly adjusted. This simple adjustment can often resolve the issue. Next, inspect the air filters; if they are dirty or clogged, replacing them can significantly improve airflow and AC performance. Following this, examine the refrigerant levels, as low levels can lead to warm air blowing from the vents. If you suspect a refrigerant issue, it’s advisable to have a professional assess and refill it if necessary. Additionally, look for any visible signs of leaks in the AC system, such as oily residue around connections or hoses, as these can indicate a loss of refrigerant. Testing the compressor is also crucial; it should engage properly when the AC is activated. If it doesn’t, it may require repair or replacement. Lastly, check the electrical connections related to the AC system to ensure they are secure and free from corrosion, as faulty connections can hinder the system's efficiency. By systematically following these steps, you can effectively diagnose and address common AC issues in your vehicle.

What are the common causes for the AC not working in a 2015 Mercedes-Benz GL63 AMG?

When dealing with an air conditioning system that isn't functioning in a 2015 Mercedes-Benz GL63 AMG, it's crucial to understand the common problems that could be at play. One of the primary culprits is a refrigerant leak, which can significantly diminish the system's ability to produce cool air. Additionally, a faulty compressor can hinder the entire AC operation, as it is responsible for circulating the refrigerant. Electrical issues, such as blown fuses or damaged wiring, can also disrupt the system's functionality. Another potential issue is a clogged or blocked condenser, which can obstruct airflow and reduce cooling efficiency. Furthermore, if the blower motor is malfunctioning, it may fail to distribute the cool air effectively throughout the cabin. Lastly, a malfunctioning thermostat can lead to inconsistent temperature control, making it difficult to achieve the desired cooling effect. By identifying these common problems, DIY enthusiasts can better diagnose and address the issues affecting their vehicle's air conditioning system.

How urgent is it to address the AC malfunction in a 2015 Mercedes-Benz GL63 AMG?

Addressing an AC malfunction in a 2015 Mercedes-Benz GL63 AMG is crucial for maintaining a comfortable and safe driving experience. The urgency of repairs cannot be overstated, as a malfunctioning AC system can lead to significant discomfort, especially during hot weather or long journeys. Moreover, neglecting these issues may result in more severe problems down the line, potentially escalating repair costs and impacting the vehicle's overall performance. A faulty AC may also signal underlying issues within the vehicle's cooling system, which could further compromise efficiency and safety. Therefore, it is advisable to prioritize the repair of any AC issues promptly to ensure the vehicle remains in optimal condition and to safeguard the comfort of all occupants.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2015 Mercedes-Benz GL63 AMG AC Issues & Repairs | RepairPal