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

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.

Courtesy of AUDI OF AMERICA, LLC

Install in the reverse order of removal while noting the following:

Replace the seals. Refer to the Parts Information for the correct version.

-- Route the condensation water drain hose under the wiring harness for the Airbag Control Module -J234- -4- as shown.

-- Pay attention that the condensation water drain hose -3- is seated correctly.

-- The coding -2- and -arrow- must line up with the heater and A/C unit -1-.

-- If a commercially available cable tie was used to secure the condensation water drain -3-, replace it.

-- Coat the new seals with refrigerant oil before installing the refrigerant lines. Refer to SEALS AND GASKETS .

-- Fill with coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Evacuate and charge 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) .

-- Check the heating and A/C system function.