Plenum Chamber Refrigerant Line Pass-Through, Removing And Installing: Removing

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with High-Voltage System

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

-- Switch the ignition on.

-- Vehicles with Heat Pump Function, 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 .

-- Switch off the ignition.

Continuation for all vehicles

-- Discharge the refrigerant circuit. Refer to Refrigerant Circuit or A/C SERVICE STATION, USING .

-- Remove the left front wheel housing liner. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .

LHD vehicle

-- Remove the windshield wiper motor. Refer to WINDSHIELD WIPER MOTOR -V-, REMOVING AND INSTALLING .

RHD vehicles

-- Remove the debris grille. Refer to DEBRIS GRILLE, REMOVING AND INSTALLING .

Continuation for all vehicles

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CAUTION:

Danger of frostbite due to refrigerant coming out under pressure.

Frostbite on the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Evacuate or drain refrigerant and open the refrigerant circuit immediately.

- If more than 10 minutes elapse after extracting or draining the refrigerant and the refrigerant circuit has not been opened, extract or drain the refrigerant again. Pressure develops in the refrigerant circuit due to evaporation.

-- Remove the bolts -A-.

-- Loosen the refrigerant lines to the expansion valve -C and D- from the bracket -B- and the pass-through -E-.

For vehicles with a second evaporator (a rear heater and A/C unit)

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-- Remove the bolt -A-.

-- Loosen the refrigerant lines to the second evaporator -C and D- from the line connection -B- to the pass-through -E-.

Continuation for all vehicles

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-- Remove the bolt -A-.

-- Loosen the inner heat exchanger -C- from the bracket -B- and the pass-through -D-.

-- Loosen the pass-through -A or B- (different versions) from the opening in the body, to so do press the catches.

Courtesy of AUDI OF AMERICA, LLC