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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Cooling System 2.0L (DMSA) >> 19 Cooling System >> Cooling System/Coolant >> Coolant, Draining And Filling >> Drain The Coolant

Drain The Coolant

Special tools and workshop equipment required 

Fig 2: 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-.

-- Remove the front noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Place the Shop Crane - Drip Tray: VAS6208  underneath.

GWWA19-12322Courtesy of AUDI OF AMERICA, LLC
CAUTION:

There is a risk of injury if the radiator fan turns on by itself.

- Disconnect the connectors.

-- Lift the clamp -2- and remove the coolant hose from the lower right of the radiator and drain the coolant.

-- Version with dual clutch transmission: loosen the hose clamp -right arrow- and remove the coolant hose from the ATF cooler and drain the coolant, to do so open the heat shield boot if equipped.

GWWA19-12329Courtesy of AUDI OF AMERICA, LLC

-- Reattach the coolant hoses. Refer to Figure for versions with a connector coupling.