Bad CondenserĪn AC condenser is a little radiator that pulls the heat out of your car’s refrigerant. It can be tempting to get more coolant and get back on the road, but unless you find where the leak is coming from, it’ll eventually happen again. In fact, most compressors won’t even cycle on without the right amount of refrigerant pressure (this saves them from eating themselves).Ī low refrigerant level is perhaps the most common reason that your Passat’s air conditioner is not blowing cold. Your Passat’s air conditioner will not work if the refrigerant level is too low. Here are the most common causes of an AC system not blowing cold in the Volkswagen Passat: Lack of Refrigerant Volkswagen Passat Air Conditioning Not Blowing Cold: Causes If there isn’t a leak, the blend door is working, and the system pressure is OK, you’ll likely need to replace the condenser, evaporator, fan, or compressor.Here’s how to test and determine if there is a leak. If it’s low, you’ll need to charge it and find out where the leak came originated. Inspect the cabin air filter (if equipped) to verify that it is not clogged.
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