Refrigerant Shut-Off Valve -V424-, REMOVING AND INSTALLING: Installing

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

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

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

-- Tighten the union nuts -C- all the way by hand.

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-- Check the position of the refrigerant lines -D and E- to the Refrigerant Shut-Off Valve - V424- -B- using the label applied during removal, and correct if necessary.

-- Tighten the union nuts -C-, and while doing so, counterhold on the Refrigerant Shut-Off Valve -V424- -B- and make sure that the routing of the refrigerant lines is without tension.

When tightening the union nuts, do not tension the refrigerant lines.

-- Check the routing after securing refrigerant lines. They must be inserted in their brackets and must not come into contact with other components.

-- Evacuate and fill the refrigerant circuit. Refer to Refrigerant Circuit (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) or Working with A/C Service Station .

-- Switch the ignition on.

-- Vehicles with Heat Pump Function, Initiate the basic setting of the A/C system through the Thermal Management Control Module -J1024- and activate the power-controlled valves using the routine Charge/flush the refrigerant circuit stop routine using the Vehicle Diagnostic Tester .

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