Audi A4 Owners & Service Manuals

Audi A4: Refrigerant Circuit General Information

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 Vehicles with a High Voltage System (Hybrid Vehicles)

Extremely Dangerous Due to High-Voltage The high-voltage system is under high-voltage. Death or serious bodily injury by electric shock. - Individuals with electronic/medical life- and health su

 Refrigerant Circuit Components Allocation, High and Low Pressure Sides

 General Information

High pressure side are the condenser, receiver/dryer and restrictor or expansion valve to separate the high and low pressure liquid ends. High pressure results from the restrictor or expansion valve

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 Refrigerant Circuit Pressures Specified Values, Vehicles with Heat Pump

  Note On vehicles with a high-voltage system and heat pump (for example on the Audi Q7 e-tron) installed in the refrigerant circuit and electrically activated vehicles which regulate the flow of the refrigerant in the refrigerant circuit depending on the current operating condition. The

 Service Station, Important Usage Information

Observe the following with regard to service station operation. Refer to the Parts Catalog (Tools; Special Tools and Equipment: A/C and Heating). - The filters and dryers installed must be replaced at the latest on completion of the service life specified in the relevant operating instructi

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