Fresh Air Intake, Removing And Installing: Checking

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-- Check the cowl panel trim -A- for proper installation and damage. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING / OVERVIEW - PLENUM CHAMBER BULKHEAD .

-- Check the seals between the fresh air intake cover -A-, the cowl and the windshield cross member -C- for damage and proper fit. These seals prevent water from entering between the window cross member and the cowl panel trim and running into the A/C intake shroud. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING / OVERVIEW - PLENUM CHAMBER BULKHEAD .

REMOVING AND INSTALLING

NOTE:

Depending on the version, for some countries with high dust levels (for example China), a dust filter installed instead of intake air grille -A-, which prevents dust and sand from entering the fresh air blower. Refer to the Parts Information

Fig 1: Depending On Version, For Some Countries With High Dust Levels, A Dust Filter Installed Instead Of Intake Air Grille

Courtesy of AUDI OF AMERICA, LLC

-- Perform the preparatory work. Refer to FRESH AIR INTAKE, REMOVING AND INSTALLING .

-- Disconnect the connector -B- from the Air Quality Sensor -G238- /Humidity Sensor in Fresh Air intake Duct -G657- (there are different locations).

Fig 2: Removing Air Quality Sensor

Courtesy of AUDI OF AMERICA, LLC

NOTE:

There are different versions of the air intake shroud for the fresh air intake -C- (with and without a mount for the Air Quality Sensor -G238- -A-, front mount or on the side). To ensure the correct version. Refer to the Parts Information.

-- If equipped, remove the screws -C- (tightening specification: 3 Nm) and remove the cover with the rain water drain channel -B-.

Fig 3: Identifying Rain Water Drain Channel Components

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-- Remove the screws -B-.

Fig 4: Depending On Version, For Some Countries With High Dust Levels, A Dust Filter Installed Instead Of Intake Air Grille

Courtesy of AUDI OF AMERICA, LLC

-- Remove The Fresh Air Intake -C-.

Installation Is Done Is Reverse Order, Observe The Following:

Pay Attention To The Tightening Sequence For The Nuts -B- When Installing Them.

-- Tighten The Nuts -B- Lightly By Hand In The Following Sequence.

Tighten The Inner Lying Nut -B- (At Right In The Illustration).
Tighten The Outer Lying Nut -B- (Top Left In The Illustration).
Tighten The Outer Lying Nut -B- (Bottom Left In The Illustration).

-- Tighten The Nuts -B- According To The Above Tightening Sequence (Tightening Specification: 3.5 Nm ).

NOTE:

Check for damage prior to installing the fresh air intake -C- on the fresh air intake and the bonded seal; if there is damage, replace the seal or fresh air intake -C-. Refer to the Parts Information.

When installing, make sure the fresh air intake -C- and seal are seated correctly; if the fresh air intake -C- is not installed correctly, water can seep into the A/C unit intake shroud through the sealing surface -D-.

Prior to installing the cowl cover -A- (there are different versions), check the cowl and the seals for the cover -A- and the window cross member -C- for damage; if the cover, the cowl or the seal are damaged, water can seep into the fresh air intake and also into the A/C intake shroud.

Fig 5: Identifying Fresh Air Intake Components

Courtesy of AUDI OF AMERICA, LLC