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Home >> Audi >> 2020 >> A4 Prestige >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> General (HVAC), Technical Data >> General, Technical Data >> General Information >> Heating And A/C System Control And Regulation Components Outside Vehicle Interior >> Components Outside Vehicle Interior

Components Outside Vehicle Interior

NOTE:

Coolant Hoses, Disconnecting and Connecting at Connections to Heater and A/C Unit Heater Core. Refer to HEATER CORE, REMOVING AND INSTALLING .

Incorporation of the heater and A/C unit heater core in the engine coolant circuit. Refer to CONNECTION DIAGRAM - COOLANT HOSES .

Depending on the vehicle date of manufacture, connecting points may be installed in the refrigerant lines on certain versions. Like the connections to various components, these connection points may only be loosened and opened when the refrigerant circuit is empty. Refer to A/C SYSTEM, GENERAL INFORMATION or OVERVIEW - REFRIGERANT CIRCUIT COMPONENTS .

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