What to Do When the Mercedes GLC Air Conditioning is Not Cooling?

[LaNorah]

When the air conditioning of a Mercedes GLC is not cooling, you should check whether the ninth button on the air conditioning control panel, the A/C button, is turned on. Observe if it is in the recirculation mode. If everything seems fine, the air conditioning compressor might be faulty, and the owner needs to take the car to a 4S store for after-sales repair. Below is some relevant information about the Mercedes GLC: 1. Introduction to the Mercedes GLC: The Mercedes GLC can essentially be considered as the coupe version of the GLK. The main reason the Mercedes GLC was not introduced until 2016 is that it is based on the new generation GLK platform, which brings more platform advantages to the GLC. 2. Configuration Information of the Mercedes GLC: The off-road animation is particularly attractive. Parameters such as gradient, steering angle, direction of travel, roll angle, throttle scale, and braking degree are all dynamically displayed in real-time on the central display. The GLC comes with a relatively rich set of comfort and safety features.

[RubyLynn]

My Mercedes-Benz GLC suddenly stopped cooling last summer, and driving in the scorching heat felt like sitting in a sauna. First, remember to check if the AC button is actually turned on—sometimes we just forget to press it. Then, take a look at the temperature settings to make sure it’s not set to heating. Low refrigerant is the most common issue; you can check by feeling the AC pipes—if they’re not cold, that’s likely the problem. The Mercedes filter clogs up easily—I replace mine every 20,000 km, otherwise dust buildup blocks the airflow. Also, inspect the condenser at the front to see if it’s covered by leaves—just rinse it with water. If you can’t figure out the issue, head to the dealership ASAP—they have specialized equipment to test compressor pressure, which we can’t handle ourselves. Whenever possible, park in the shade—parking under direct sunlight cuts the AC’s effectiveness in half.

[Samuel]

I remember last year when I was driving the GLC, the air conditioning suddenly stopped working, and I was sweating in a panic. Later, I learned that common issues are usually limited to a few scenarios: insufficient refrigerant is the most common, especially for cars over three years old, which require regular top-ups. If the compressor fails, it will make a buzzing noise—don’t push through this situation; get it fixed immediately. Electronic control board malfunctions are quite common in Mercedes-Benz; a friend of mine had this issue. A dirty cabin air filter can block cold airflow, especially when using the outside air circulation mode in summer. Poor condenser heat dissipation is another problem—after parking, feel the metal pipes under the front of the car to see if they’re excessively hot. I recommend visiting a professional repair shop for an inspection immediately. The air conditioning system in a Mercedes is quite delicate, and adding refrigerant yourself can easily lead to overfilling, which may damage the system.

[SanMarcus]

Don't panic if your car's AC isn't cooling – immediately open windows for ventilation to ensure clear visibility. First, quickly check if the AC panel settings are correct, making sure the temperature is set to the lowest and the fan speed is high enough. If you detect an earthy smell, it's time to replace the cabin filter – this consumable must be changed every two years. Hearing strange noises after recent heavy rain? The drain pipe might be clogged. The quickest emergency solution is to switch to recirculation mode to cool the cabin rapidly. If idling at a red light for over five minutes, it's best to turn off the engine to prevent further temperature rise. For those with basic knowledge, check the AC fuse location in the fuse box under the driver's seat. Never attempt DIY repairs on the compressor or electrical circuits – Mercedes-Benz electronic systems are particularly complex. The safest approach is to immediately schedule an inspection at the nearest authorized service center.