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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System 2.0L (DPAA) >> 19 Cooling System >> Coolant Pipes >> Coolant Pipes, Removing And Installing >> Left Coolant Pipe, Removing And Installing, Vehicle Without High-Voltage System >> Removing

Left Coolant Pipe, Removing And Installing, Vehicle Without High-Voltage System: Removing

Fig 1: Coolant Expansion Tank
GWWA19-12304Courtesy of AUDI OF AMERICA, LLC
CAUTION:

The cooling system is under pressure when the engine is warm. There is a risk of scalding due to hot steam and hot coolant.

Scalding the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Reduce the pressure by covering the coolant expansion tank cap with a cloth and carefully opening it.

-- Open the coolant expansion tank cap -1- by releasing the catch in direction of -arrow-.

All except Audi Q7/Q8:

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

Audi Q7/Q8:

Refer to the appropriate service information.

Vehicles with a Particulate Filter: 

GWWA26-12308Courtesy of AUDI OF AMERICA, LLC

-- If installed, free up the connector -1- for the Dual Exhaust Temperature Sensor 1 -GX41-.

Continuation for All Vehicles: 

GWWA19-13210Courtesy of AUDI OF AMERICA, LLC

-- Free up the wires.

-- Place a cloth underneath to catch leaking coolant.

-- Remove the bolts -1, 2, and 3-.

-- Disconnect the coolant hoses with Hose Clamps - Up To 25mm: 3094  .

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