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Home >> Audi >> 2022 >> Q3 Premium Plus >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Cylinder Head, VALVETRAIN 2.0L >> 15 Cylinder Head, VALVETRAIN >> Cylinder Head >> Cylinder Head, Removing And Installing >> Removing

Cylinder Head, Removing And Installing: Removing

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

-- Remove the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .

-- Bring the engine support and engine mount into the installation position and tighten the bolts to 20 Nm.

-- Remove the engine support.

-- Remove the connector -2- from the bracket and disconnect them and then free up the wire.

Fig 1: Exploded View Of Heated Oxygen Sensor
GWWA24-11137Courtesy of AUDI OF AMERICA, LLC

Vehicles with a Particulate Filter: 

GWWA10-12317Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -arrow- for the pressure lines.

-- Free up the pressure lines.

Continuation for All Vehicles: 

GWWA26-10998Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -2- and the screw-type clamp.

-- Remove the nuts -1 and 3- and move the catalytic converter to the side. (Shown with the engine removed.)

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

Vehicles with a Particulate Filter: 

GWWA10-12318Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and nut -1- and remove the heat shield -2-.

-- Disconnect the connector -2-.

GWWA10-12319Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and move the pressure lines with the Exhaust Pressure Sensor 1 -G450- toward the rear.

Continuation for All Vehicles: 

GWWA23-10689Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -arrow- on the left and right.

-- Unclip and remove the lower section -1- of the air duct.

-- Loosen the hose clamp -2- and remove the air duct hose from the charge air cooler.

Fig 2: Identifying Clamps
GWWA21-10489Courtesy of AUDI OF AMERICA, LLC

-- Seal the open lines and connections with clean plugs from the Engine Bung Set: VAS6122  .

-- Loosen the hose clamp -2-.

Fig 3: Disconnect Charge Air Pressure Sensor Connector
GWWA21-10610Courtesy of AUDI OF AMERICA, LLC

-- Free up the coolant hose -3-.

-- Remove the screws -arrows-.

-- Disconnect the connector -1- from the Charge Air Pressure Sensor -G31-.

-- Remove the right air duct pipe.

-- Loosen the hose clamps -arrows- and remove the coolant hoses.

Fig 4: Identifying Clamps And Coolant Hoses
GWWA19-11614Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk of destroying the coolant pipes through deformation.

- Never change the coolant pipe bend shape.

-- Pivot the coolant line -1- to the side.

-- Disconnect the connectors:

GWWA17-10751Courtesy of AUDI OF AMERICA, LLC

1 -  For the Oil Pressure Switch -F22- -2-

3 -  For the Reduced Oil Pressure Switch -F378- -4-

5 -  For the Piston Cooling Nozzle Control Valve -N522- -7-

-- Remove the bolts -arrows- for the front coolant pipe -1-.

Fig 5: Locating Air Guide Pipe Bolts
GWWN19-10856Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1- and the nut -3- and then remove the bracket -2- for the intake manifold.

Fig 6: Identifying Bolt And Nut
GWWA24-11159Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors:

GWWA15-12218Courtesy of AUDI OF AMERICA, LLC
  1. For the Throttle Valve Control Module -GX3-
  2. For designation in the wiring diagram Intake Manifold Sensor -GX9-

-- Free up the wiring harness and push to the side.

-- Loosen the hose clamp -1-, remove the air duct hose from the charge air cooler.

GWWA21-10943Courtesy of AUDI OF AMERICA, LLC

Vehicles with Transmission Ventilation Hose. 

GWWA27-10443Courtesy of AUDI OF AMERICA, LLC

-- Detach the transmission ventilation -1- from the battery tray and set aside by releasing the catch -2- and removing the transmission ventilation upward in direction of -arrow-.

-- Move the transmission ventilation hose to the side.

Continuation for All Vehicles: 

GWWA21-10825Courtesy of AUDI OF AMERICA, LLC

-- Free up the coolant hose.

-- Free up the wiring harness -1 and 2- from the air duct pipe.

-- Loosen the screw-type clamp -4-.

-- Remove the bolts -arrows- and remove the air duct pipe.

Vehicles with Secondary Air System: 

Fig 7: Secondary Air Injection Sensor 1 -G609- / Secondary Air Injection Solenoid Valve -N112- component location
GWWA10-11993Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1-.

-- Press the release buttons on both sides and remove the secondary air injection hose -2-.

Continuation for All Vehicles: 

Fig 8: Knock Sensor Connector Locations
GWWA15-11485Courtesy of AUDI OF AMERICA, LLC

-- Remove the connector -3- for the Knock Sensor 1 -G61- from the bracket and disconnect it.

-- Disconnect the connectors -2 and 4-.

-- Disconnect the connector -1- for Engine Coolant Temperature Sensor -G62- -3-.

Fig 9: Identifying Engine Coolant Temperature Sensor
GWWA19-11456Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- for the Oil Pressure Switch, Level 3 -F447- -2-.

Fig 10: Oil Pressure Switch, Level 3 -F447- Installation Position -2-
GWWA19-11453Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -1- for the Intake Manifold Runner Control Valve -N316-.

GWWA24-11444Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -3- from the Camshaft Position Sensor -G40- -2-.

GWWA28-10116Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and double bolt -2-.

GWWA21-11409Courtesy of AUDI OF AMERICA, LLC

-- Remove the heat shield -1-. There are different versions.

-- Remove the bolt -1-. Only loosen the bolt -3-.

GWWA21-10811Courtesy of AUDI OF AMERICA, LLC

-- Remove the turbocharger bracket -2-.

-- Remove the nuts -arrows-.

GWWA21-10812Courtesy of AUDI OF AMERICA, LLC

-- Remove the turbocharger from the cylinder head and tie up toward the rear.

All additional procedures are described under CYLINDER HEAD, REMOVING AND INSTALLING .