Mechanical Damage

Check the air filter housing, air filter element and air duct hoses for contamination.
Check the entire charge air circuit and charge air cooler for foreign objects.
If there are foreign objects in the charge air system, clean the charge air circuit and replace the charge air cooler if necessary.

Special tools and workshop equipment required

Removing

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

Preliminary work may be required depending on the model. Refer to TURBOCHARGER, REMOVING AND INSTALLING .

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

-- Remove the right lower air duct pipe on the turbocharger. Refer to AIR DUCT PIPE, REMOVING AND INSTALLING .

Vehicle without particulate filter:

Courtesy of AUDI

-- Remove the right front muffler. Refer to FRONT MUFFLER, REMOVING AND INSTALLING .

-- Loosen the screw-type clamp -1- and move the right catalytic converter toward the rear.

Vehicles with a particulate filter:

-- Remove right particulate filter. Refer to PARTICULATE FILTER, REMOVING AND INSTALLING .

Continuation for All Vehicles:

Courtesy of AUDI

-- Remove the bolts -arrows- and then remove the retaining plate -3-.

-- Remove the coolant line -1-.

-- Remove the coolant line -2- and oil supply line -4-.

-- Remove the crankcase ventilation hose -1- by pressing the release buttons on both sides.

Courtesy of AUDI

-- Disconnect the connector -3-.

-- Remove the vacuum hose -2- at the same time to not damage it.

-- Loosen the screw-type clamp -arrow-.

Courtesy of AUDI

-- Remove the bolt -2-.

Courtesy of AUDI

-- Remove the turbocharger and at the same time remove the oil return connection -1-.