Coolant, Draining And Filling: Notes

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Cooling System Tester - Adapter:VAG1274/8

Fig 1: Identifying Cooling System Tester Adapter
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Cooling System Tester - Adapter:VAG1274/10 for 2.9L engine

Fig 2: Adapter V.A.G 1274 Tester V.A.G 1274/10
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Cooling System Charge Kit:VAS6096

Fig 3: Cooling System Charge Kit: VAS6096
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Shop Crane - Drip Tray:VAS6208

Fig 4: Identifying Drip Tray
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Hose Clip Pliers:VAS6340

Fig 5: Hose Clip Pliers VAS6340
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Hose Clip Pliers:VAS6362

Fig 6: Hose Clip Pliers
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Refractometer:T10007A

Fig 7: Refractometer : T10007 A
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Protective Eyewear
Safety Gloves

Drain the Coolant

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-- Remove the right cover -1- toward the rear in direction of -arrows- and remove.

Fig 8: Coolant Expansion Tank

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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 -arrow-.

-- Remove the noise insulation. Refer to appropraite Service Information .

-- Remove the right front wheel spoiler. Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .

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

CAUTION:

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

- When performing procedures near the radiator maintain a distance to the radiator.

2.9L Engine:

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-- Loosen the hose clamps -1 and 3-, remove the coolant hoses and let the coolant drain out.

3.0L Engine:

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-- Loosen the hose clamp -1- and remove the coolant hose and let the coolant drain out.

Continuation for All:

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-- Open the hose clamp -arrow-.

-- Remove the coolant hose from the right coolant pipe, hold it downward, and allow the coolant to drain (shown for LHD vehicle).

Secure all hose connections with hose clamps that match the ones used in series production. Refer to the Parts Information.

-- Reconnect the coolant hoses.

Coolant Specification

All information is described. Refer to COOLANT, DRAINING AND FILLING .