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

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with 176 kW TDI Biturbo Engine

-- Remove the engine. Refer to [For engine(s) DSFB] Engine, Removing and Installing .

Continuation for All Vehicles

-- Remove the engine cover if necessary. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- If necessary, remove the air filter housing. Refer to OVERVIEW - AIR FILTER HOUSING .

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

-- For all the following work, close the open lines and connections with clean plugs from the :VAS6122 .

-- Mark the coolant hoses -2 and 3- so that they are reconnected later on the correct side. The heater core is only designed for a specific flow direction of the coolant.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Clamp off the coolant hoses with the :3094 -1 and 4-.

CAUTION:

The cooling system may be under pressure. There is a risk of scalding due to hot steam and hot coolant.

Scalding the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Reduce the pressure by covering the coolant expansion tank cap with a suitable towel and carefully opening it.

-- Lift the clamps.

-- Remove the coolant hoses.

-- Connect a section of hose to the upper connection.

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

-- Hold the container under the lower connection and carefully blow out coolant from the heater core using the compressed air gun.

-- Remove the instrument panel crossmember. Refer to INSTRUMENT PANEL CROSSMEMBER, REMOVING AND INSTALLING .

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

-- Lift the rear footwell vent underneath the front seat and pull rearward to facilitate removing the footwell vent from the heater and A/C Unit.

-- Remove the rear footwell vent from the heater and A/C unit.

NOTE:

Ignore items -1 and 2-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -3-.

NOTE:

Ignore items -1, 2, 3, and 4-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -5-.

-- Cover the carpet and Airbag Control Module -J234- in the vehicle interior with a waterproof foil and absorbent paper.

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the heater and A/C unit -1- from the bracket on the plenum chamber bulkhead.

-- Unhook the wiring harness -1- -arrows-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the cable channel -2- from the mounts -arrows-.

NOTE:

The following steps must be performed with a second technician.

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