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Reasons for the Compressor Not Working in the Passat Lingyu

2 Answers

MacGemma

07/29/25 8:03am

There are many reasons why the air conditioning compressor in the Passat Lingyu may not be working. Compressor wear reasons: Severe internal wear of the compressor can prevent it from functioning properly. The compressor plays a crucial role in the air conditioning system, primarily compressing and delivering refrigerant. This causes the compressor to operate at high speeds for extended periods, which is one of the reasons it may fail to work properly. Refrigerant leakage reasons: Check if there are any refrigerant leaks. Without refrigerant to compress or circulate, the compressor will not operate. Electrical system reasons: Electrical system malfunctions are also a common cause of air conditioning compressor failure. It's advisable to check if the electrical circuits are intact and inspect components like the temperature sensor and solenoid valve.

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AbelAnn

08/12/25 11:16am

When my Passat's air conditioning compressor suddenly stops working, I usually check the fuse box first to see if any fuses have blown—this is quite common. If the fuses are intact, then I inspect the electrical connections, as issues like aging wires or poor relay contact can prevent power supply. The Passat compressor itself might be seized or worn out, especially if you hear unusual noises when turning on the AC, indicating mechanical problems. Low refrigerant levels are another critical cause; if the system pressure is too low, the safety switch will prevent the compressor from starting, which is more noticeable during hot summer days. Additionally, faults in the AC control panel, such as unresponsive buttons or error codes, can also lead to non-operation. I recommend having a technician check the pressure and electrical circuits during routine maintenance to avoid situations where the AC fails on the road, leaving you sweating in the car—it's truly frustrating. Ultimately, neglecting these small issues over time can lead to major system damage, so don’t wait until a costly repair is needed to regret it.

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