Which One is the Air Conditioning Cooling Switch in a Car?

[LaDiana]

Generally, the air conditioning switch in a car is located next to the steering wheel. Typically, the blue button on the left side represents cooling, the red one represents heating, and the middle one indicates a moderate temperature. Car air conditioning may experience issues such as insufficient cooling and noise. Noise: Compressor noise often occurs. When using the air conditioning, under normal circumstances, the compressor only makes a "click" sound when its electromagnetic clutch engages or disengages, and it should be very quiet during operation. If there is a "rumbling" sound during operation, it may indicate that the compressor has worn out due to a lack of refrigerant oil in the pipeline. Solution: Generally, the only option is to replace the compressor. Compressor Not Running: The refrigerant's circulation in the pipeline relies on the compressor's operation. If the compressor cannot engage and operate due to abnormal refrigerant pressure, circuit failure, damaged temperature sensor, or burned-out electromagnetic clutch, cooling will be insufficient. It is recommended to replace the temperature sensor or electromagnetic clutch.