What Causes the Gurgling Sound When Turning on the Air Conditioning in the New Passat?
2 Answers
New Passat air conditioning gurgling sound causes: Refrigerant contaminated with impurities: Air conditioning abnormal noise is generally caused by air and moisture mixed in the refrigerant components. Compressor internal structure damage: If the condition persists after refrigerant recharge and the abnormal sound is located near the compressor, there's a high probability of internal mechanical structure damage in the compressor; if the noise recurs after some time and originates from inside the dashboard, the desiccant bottle's efficiency is likely reduced. The noise after air conditioning startup is mainly the compressor's operational noise and does not constitute a fault.
When I turn on the air conditioning in my new Passat, it makes a gurgling sound? I think this is quite common, especially for new cars that haven't been used for long. I've driven similar models before and found that this sound is mostly due to bubbles in the refrigeration system or uneven refrigerant flow. New cars might have imperfect adjustments during assembly, causing the expansion valve or compressor to produce a gurgling sound during operation. Frequent use in summer, with the air conditioning under high load, makes it more likely to occur. If it's still under warranty, don't delay—take it directly to the 4S store for inspection. Technicians will use professional tools to measure refrigerant pressure to check for insufficient levels or leaks, and repairs will be free. In daily driving, if the sound isn't too loud, it might be a minor issue, but if it's too loud, be cautious of potential compressor damage. By the way, regular maintenance of the air conditioning system, such as replacing filters, can prevent such noises and ensure fresh, comfortable airflow, making driving safer.
