Refrigerant Lines With Inner Heat EXCHANGER, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2017 Audi SQ5, 2017 Audi Q5, 2016 Audi SQ5, 2016 Audi Q5, and 2015 Audi SQ5. However, it is still accessible from the selected car via links, so may be relevant.

-- Turn off the ignition.

-- Discharge the refrigerant circuit. Refer to USING SERVICE STATION . For additional information, refer to OVERVIEW - REFRIGERANT CIRCUIT, NOT OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM and OVERVIEW - REFRIGERANT CIRCUIT, OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

NOTE:

Depending on the allocation of the service connection to the refrigerant line and vehicle version, it may be necessary to remove the left additional reinforcement on the tower brace so that the service coupling of the A/C service station can be connected (for example, on the Audi Q5). Refer to OVERVIEW - SUSPENSION STRUT WITH MOUNTING BRACKET, SHOCK ABSORBER FORK, UPPER CONTROL ARM AND TOWER BRACE and USING SERVICE STATION . For additional information, refer to OVERVIEW - REFRIGERANT CIRCUIT, NOT OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM and OVERVIEW - REFRIGERANT CIRCUIT, OPENING THE REFRIGERANT CIRCUIT, VEHICLES WITHOUT HIGH VOLTAGE SYSTEM (Refrigerant R134a, Servicing; Refrigerant Circuit, Using A/C Service Station).

-- Remove the plenum chamber cover and/or the cowl panel trim (different versions). Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Disconnect the ground connection from the Battery -A-. Refer to BATTERY, DISCONNECTING AND CONNECTING .

NOTE:

From MY 2010, refrigerant lines with an inner heat exchanger -A- that have an additional weight (balance) -B- to reduce noise are being installed on certain versions and depending on the engine. When installing refrigerant lines with an inner heat exchanger -A- and the front wall of the plenum chamber, make sure the weight -B- and the refrigerant lines -A- are not too close or touching the other components.

Fig 1: Identifying Refrigerant Pipe Weight

Courtesy of AUDI OF AMERICA, LLC

-- Remove the refrigerant line from the quick-release coupling connections. Refer to REFRIGERANT LINES, DISCONNECTING FROM QUICK-RELEASE COUPLINGS AND CONNECTING .

NOTE:

Close all open lines and connections on the refrigerant line with suitable caps (avoid dirt and moisture from entering the system).

-- Detach the plenum chamber front wall -A- from the vehicle. Refer to OVERVIEW - BULKHEAD .

Fig 2: Plenum Chamber Front Wall And Bolts

Courtesy of AUDI OF AMERICA, LLC

NOTE:

On vehicles with a gasoline engine or a 4 cylinder TDI engine, both coolant hoses to the heater core are routed through the plenum chamber front wall -A-. On these vehicles, loosen the grommet on both coolant hoses and move the plenum chamber front wall to the side (when doing this, the refrigerant circuit must not be opened).

When loosening the plenum chamber front wall, be careful not to damage the brake booster vacuum line.

-- For vehicles with a 6-Cylinder TDI engine, remove the plenum chamber front wall -A-. Refer to OVERVIEW - BULKHEAD .

-- Disengage the catches -arrows A- and remove the upper part of the line pass-through -2- upward -arrow B-.

Fig 3: Disengaging Catches -Arrows A- And Remove Upper Part Of Line Pass-Through -2- Upward -Arrow B-

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Disregard item -1-.

-- Loosen the wiring harness from the lower part of the line pass-through -2- and remove the lower part.

-- Remove the nut -C- on the suspension strut tower.

Fig 4: Identifying Screws To Refrigerant Line -B- And Nut -C-

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -A-.

-- Disconnect the refrigerant line -B- with the inner heat exchanger from the expansion valve.

NOTE:

Seal the open connections on the refrigerant line and on the expansion valve with suitable caps (to prevent dirt and moisture from entering the system).

Fig 1: Identifying Refrigerant Pipe Components

Courtesy of AUDI OF AMERICA, LLC

-- Turn off the ignition.

-- Discharge the refrigerant circuit. Refer to USING SERVICE STATION (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

-- Remove the nut -6- and open the clamp -5-.

-- Remove the refrigerant line -2- from the quick-coupling connection -1-. Refer to REFRIGERANT LINES, DISCONNECTING FROM QUICK-RELEASE COUPLINGS AND CONNECTING .

-- Remove the bolt -3- and remove the refrigerant line -4-.

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

-- Remove the plenum chamber cover and/or the cowl panel trim (different versions). Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Disconnect the ground connection from the Battery -A-. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Fig 2: Removing Plenum Chamber

Courtesy of AUDI OF AMERICA, LLC

-- Disengage the catches -arrows A- and remove the upper part of the line pass-through -2- upward -arrow B-.

-- Loosen the wiring harness -1- from the lower part of the wire pass-through and then remove the lower part.

-- Detach the plenum chamber front wall -A- from the vehicle. Refer to OVERVIEW - BULKHEAD .

Fig 3: Plenum Chamber Front Wall And Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove bolts -1-.

Fig 4: Identifying Inner Heat Exchanger Line

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the refrigerant line -2- with the inner heat exchanger from the expansion valve.

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