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Home >> Audi >> 2024 >> S3 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Air Conditioning (Precautions, Overviews, Removing And Installing)) >> 87 Air Conditioning >> Front Heater And A/C Unit >> Heater And A/C Unit, Removing And Installing >> Removing

Heater And A/C Unit, Removing And Installing: Removing

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

-- Switch the ignition off.

-- Remove the carpet. Refer to CARPET, REMOVING AND INSTALLING .

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Discharge the refrigerant circuit. Refer to Refrigerant Circuit or Working with A/C Service Station (1 Of 2) / Working with A/C Service Station (2 Of 2) .

Vehicles with High-Voltage System

-- Remove the refrigerant lines to the expansion valve. Refer to REFRIGERANT LINES TO EXPANSION VALVE, REMOVING AND INSTALLING .

Vehicles without High-Voltage System

-- Disconnect the refrigerant line with inner heat exchanger from the expansion valve. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .

Continuation for All Vehicles

GWWA87-12956Courtesy of AUDI OF AMERICA, LLC

-- Mark the installation position of the coolant hoses -4 and 5- (shown here without the heat shield mat).

-- Lift the clamps -3 and 6- and remove the coolant hoses from the heater core for the heater.

-- Slide a short hose -A- onto the upper connection.

GWWN87-11631Courtesy of AUDI OF AMERICA, LLC

-- Insert the compressed air gun into the end of the hose.

-- Hold a container -B- under the lower connection -C- and carefully blow the coolant out of the heater core using the compressed air gun.

-- Seal the open lines and connections with clean plugs from the Engine Bung Set :VAS6122  .

-- Remove the instrument panel crossmember. Refer to Instrument Panel Crossmember .

-- Remove the rear footwell vent. Refer to REAR FOOTWELL VENT, REMOVING AND INSTALLING .

-- If installed: remove the air duct channel to the rear vent. Refer to REAR CENTER CONSOLE VENT AIR DUCT, REMOVING AND INSTALLING ..

-- Disconnect the connector -4- on the fresh air blower -3- and if equipped disconnect the connector -2- on the speaker -1-.

GWWA87-12664Courtesy of AUDI OF AMERICA, LLC

-- Cover the ground under the heater and A/C unit with absorbent paper.

GWWA68-11229Courtesy of AUDI OF AMERICA, LLC

-- Remove the nut -2-.

-- Remove the bracket -1- for the center console.

-- Remove the condensation water drain -2- from the heater and A/C unit -1-.

GWWA87-11333Courtesy of AUDI OF AMERICA, LLC

-- Remove the heater and A/C unit -1- from the brackets.

GWWA87-11347Courtesy of AUDI OF AMERICA, LLC

-- Free up the line channel -3-.

-- Free up the wiring harness -2- at the mounts -4- -arrows-.

-- Remove the heater and A/C unit to the right.