Why is the air conditioning in a new car not cooling?
3 Answers
The reasons why the air conditioning in a car may not be cooling include: the air conditioning is broken; power failure causing the air conditioning not to cool; the air conditioning automatically stops running based on the temperature sensor. Specific inspection methods are: 1. Check the compressor belt: If the belt is too loose, it should be adjusted, otherwise it can easily cause poor cooling in the air conditioning system. Check the hose connections of the air conditioning system for oil traces. If leaks are found, promptly go to a repair shop to resolve the issue. 2. Clean the condenser: Keeping the surface of the car condenser clean facilitates the dissipation of heat to the outside. Regularly cleaning the condenser surface can significantly improve the cooling effect of the air conditioning system. 3. Check the refrigerant level: Inspect the refrigerant level. The sight glass is usually installed on the dryer's cover. Run the engine and air conditioning system, and observe the flow of refrigerant through the sight glass. If the air conditioner is working normally, you can see clear refrigerant continuously flowing, occasionally with small bubbles during high temperatures, and small bubbles visible when the air conditioning system is turned off. 4. Ensure sufficient refrigerant: This can be estimated by feeling the temperature difference between the inlet and outlet pipes of the dryer, or by using a manifold pressure gauge for detection.
My new car's air conditioning suddenly stopped cooling, which is really annoying. Issues with the air conditioning system in a new car are relatively rare, but not impossible. The most commonly overlooked aspect is the air conditioning operation itself—you need to confirm whether the AC button is lit up, as many owners forget to press this crucial switch. Temperature settings are also important; don’t set it too high and assume the AC is broken. Also, check if it’s set to external circulation mode, which allows hot air to continuously enter the cabin. The most common issues with new cars are loose refrigerant pipe connections from the factory causing leaks or electronic control modules needing a software update. I’ve encountered cases where the compressor had manufacturing defects right out of the factory. I recommend immediately opening the windows for ventilation and driving straight to the dealership for inspection, as it can be handled for free under warranty. Never attempt to disassemble parts yourself, as it may affect your warranty rights.
As someone who frequently deals with new car maintenance, I can tell you that troubleshooting a new car's air conditioning not cooling should start with three steps. First, confirm the basic operations: check if the temperature knob is set to the low-temperature zone (recommended below 20°C), ensure the AC switch is pressed, and verify the fan speed is turned on. Next, open the engine hood and listen for the compressor's operating sound—if the compressor isn't running, it might be an electrical issue. Finally, inspect the condenser fins behind the front bumper for any blockages by foreign objects. The most likely issue with new cars is insufficient refrigerant charge from the factory, which sometimes happens after the car is jostled during transport. Also, note that aftermarket window tinting can affect cooling performance, but this isn't a malfunction. As long as there's no human-caused damage, taking the purchase invoice to the 4S shop should resolve the issue within half an hour.
