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

Install in reverse order of removal while noting the following:

-- Make sure the condensation water hose -3- is seated correctly when installing.

Courtesy of AUDI OF AMERICA, LLC

-- 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.

-- The condensation water drain hose must be routed as shown from underneath the wiring harness of the Airbag Control Module -J234- -4-.

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

Vehicles with Refrigerant R134a

-- Fill the refrigerant circuit. Refer to Working with A/C Service Station .

-- Put the A/C system into operation after filling. Refer to A/C SYSTEM, OPERATING AFTER CHARGING R134A .

Vehicles with Refrigerant R1234yf

-- Fill the refrigerant circuit. Refer to Working with A/C Service Station .

-- Put the A/C system into operation after filling. Refer to A/C SYSTEM, OPERATING AFTER CHARGING 1234YF .

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