Refrigerant Lines, Disconnecting And Connecting At Condenser

Special tools and workshop equipment required 

• Elbow Assembly Tool: T10118 

Disconnecting 

• For all the following work, close the open lines and connections with clean plugs from the Engine Bung Set: VAS6122  .

Vehicles with high-voltage system (Audi Q7 e-tron) 

-- Switch off (deactivate) the "parking air conditioner". Refer to Owner's Manual.

-- Initiate the A/C system basic setting through the Thermal Management Control Module -J1024- and open the power-activated valves through the stored routine "Extract, evacuate and fill the refrigerant circuit" using the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function.

Continuation for All Vehicles 

-- Switch off the ignition.

-- Discharge the refrigerant circuit. Refer to Refrigerant Circuit (R134a) or Working with A/C Service Station (R1234ya) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

Q7 

-- Vehicles without left charge air cooler: remove the left air intake grille and if necessary the charge air cooler installed behind. Refer to the appropriate Service Information .

-- Vehicles with left charge air cooler: remove the front noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Vehicles with left charge air cooler: remove the end panel for the front bumper cover. Refer to the appropriate Service Information .

-- Remove the left air intake grille. Refer to OVERVIEW - BUMPER COVER .

Q8 

-- Remove the front impact guard. Refer to OVERVIEW - BUMPER COVER .

Continuation for All Vehicles 

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -C-.

-- Remove the refrigerant lines -B and D- from the condenser -A-.

-- Close open line connections and condenser connections.

Connecting 

Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal and note the following:

-- Clean the refrigerant line connections on the condenser -C- and on the refrigerant lines -A and E- and check for damage.

-- Replace the O-rings seals -B and D-. Refer to the Parts Information for the version.

-- Check the alignment pin (installed in the condenser connection or the refrigerant line, not present in all connections) for damage and correct seating.

-- Coat the O-ring seals -B and D- lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .

-- Pay attention that the O-ring seals are seated correctly on the refrigerant lines -A and E-.

-- Insert the refrigerant lines -A and E- in the connections on the condenser -C-.

-- Install the bolt -F-.

-- Check the routing of the refrigerant lines after attachment. They must be inserted in the provided brackets in a tension-free manner and must not come in contact with other components.

-- Evacuate and charge the refrigerant circuit. Refer to Refrigerant Circuit (R134a) or Working with A/C Service Station (R1234ya) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

-- Install the remaining removed components.

-- Switch the ignition on.

-- On vehicles with a high-voltage system (Audi Q7 e-tron), initiate the basic setting of the A/C system through the Thermal Management Control Module -J1024- and activate the power-controlled valves using one of the routines stored there. "Charge/flush the refrigerant circuit stop routine" using the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function.

-- Check the DTC memory for the Front A/C Display Control Head -E87- and, if necessary, delete any displayed errors using the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function.

-- Start the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .

Tightening Specifications 

• Refer to OVERVIEW - REFRIGERANT LINES 
• Refer to OVERVIEW - BUMPER COVER .
• Refer to OVERVIEW - BUMPER COVER .