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Home >> Audi >> 2021 >> S4 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger [CWGD,DECA] >> 21 Turbocharger, Supercharger >> Charge Air System >> Charge Air Cooler, Removing And Installing >> Charge Air Cooler, Removing And Installing, 2.9L Engine >> Removing

Charge Air Cooler, Removing And Installing, 2.9L Engine: Removing

-- Pay attention to the guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Remove the bumper cover. Refer to BUMPER COVER, REMOVING AND INSTALLING .

-- Drain the coolant (refer to COOLANT, DRAINING AND FILLING, 2.9L ENGINE ) place the container of the Coolant Collection System :VAS5014  or the Shop Crane - Drip Tray :VAS6208  underneath.

Vehicles with Version 2 Charge Air System:

GWWA21-11567Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2- for the Charge Air Pressure Sensor -G31-.

-- Loosen the hose clamps -arrows- and remove the air duct pipe -1-.

Vehicles with Version 1 Charge Air System:

GWWA21-11281Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamp -5- for the air duct hose.

Continuation for All Vehicles:

-- Remove the bolts -arrows-.

-- Loosen the hose clamps -2, 3 and 4- and remove the coolant hoses.

-- Remove the bolts -arrows-.

GWWA21-11282Courtesy of AUDI OF AMERICA, LLC

-- Loosen the air duct hose clamp -2-.

-- Disengage the charge air cooler -1- upward and remove toward the rear, at the same time remove the air duct hoses.