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Home >> Audi >> 2019 >> Q7 Prestige >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (Turbocharger, Supercharger [CYRB,CVJA,CYMC,DMFA,DMFB,DNEA]) >> 21 Turbocharger, Supercharger >> Turbocharger >> Turbocharger, Removing And Installing >> Removing

Turbocharger, Removing And Installing: Removing

WARNING: This page is about a different variant/trim than selected.

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Remove the upper reinforcement brace. Refer to OVERVIEW - LOCK CARRIER .

Vehicles with a Particulate Filter: 

Fig 1: Locating Exhaust Gas Temperature Sensor 3 -G495-
GWWA26-11969Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- for the Exhaust Gas Temperature Sensor 4 -G648- and free up the wire.

-- Disconnect the connector -3-.

Fig 2: Differential Pressure Sensor
GWWA24-11996Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1- and push the Particulate Filter Differential Pressure Sensor -G1037- to the side.

-- Remove the connector -2- for the Exhaust Gas Temperature Sensor 3 -G495- from the bracket and disconnect.

GWWA26-11958Courtesy of AUDI OF AMERICA, LLC

-- Free up the wire at the heat shield.

Vehicle with High-Voltage System: 

GWWA19-12434Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1-.

-- Release the retainers in direction of -arrows- and move the coolant expansion tank -2- to the side.

-- Disconnect the connector -3-.

Fig 3: Fuel Tank Pressure Sensor 2 -G850- Component Location
GWWA10-11443Courtesy of AUDI OF AMERICA, LLC

Continuation for All Vehicles:

-- Free up the EVAP system hose -2- from the air duct pipe.

Air Duct Pipe, Version 1: 

GWWA24-11602Courtesy of AUDI OF AMERICA, LLC

-- Remove the vacuum hose -2- (example illustration above).

-- Loosen the hose clamp -3- and remove the air duct pipe -1-.

Air Duct Pipe, Version 2: 

GWWA24-12199Courtesy of AUDI OF AMERICA, LLC

-- Remove the vacuum hose -3-.

-- Press the release buttons on both sides and remove the secondary air injection hose -4-.

-- Loosen the hose clamp -1- and remove the air duct pipe -2-.

Continuation for All Vehicles: 

Fig 4: Oxygen Sensor 1 after Catalytic Converter -GX7- Component Location
GWWA24-11553Courtesy of AUDI OF AMERICA, LLC

-- Remove the connector -1- for the Oxygen Sensor 1 After Catalytic Converter -GX7- -2- from the bracket and disconnect it.

Tip: 

Different installation positions depending on models and version.

-- Remove the nuts -1- from the top.

Fig 5: Identifying Turbocharger Catalytic Converter & Nuts
GWWA26-11207Courtesy of AUDI OF AMERICA, LLC

-- Remove the noise insulations. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

Vehicles with Secondary Air System: 

-- Remove the Secondary Air Injection Pump Motor -V101-. Refer to Secondary Air Injection Pump Motor -V101-, REMOVING AND INSTALLING .

Continuation for All Vehicles: 

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

-- Remove the nut -2- from below and place the catalytic converter to the rear.

Vehicles with a Particulate Filter: 

-- Place the catalytic converter with the particulate filter toward the rear.

Continuation for All Vehicles: 

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

-- Loosen the hose clamp -arrow-, remove the air duct hose and pivot it to the side.

GWWA21-11086Courtesy of AUDI OF AMERICA, LLC

-- Place a cloth underneath to catch escaping engine oil.

GWWA21-10927Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -4- and then remove the oil return connection.

-- Remove the bolts -1 and 3- and then remove the turbocharger support -2-.

-- Remove the cap -2-.

GWWA10-11446Courtesy of AUDI OF AMERICA, LLC

-- Turn the oil filler tube counter-clockwise -arrow A- and remove it.

-- Close the oil filler tube with the cap.

-- Remove the Oxygen Sensor 1 Before Catalytic Converter -GX10-. Refer to HEATED OXYGEN SENSOR, REMOVING AND INSTALLING .

All additional procedures are described. Refer to TURBOCHARGER, REMOVING AND INSTALLING .