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Where do you add freon in your Volkswagen jetta?

Your Volkswagen Jetta does not use Freon. Freon is a trademark name for a specific type of refrigerant used in older vehicles, but Volkswagen Jettas use a different refrigerant called R-134a. The R-134a refrigerant is added to the air conditioning system through a専用のサービスポート that is located on the low-pressure side of the system.