Coolant Mixture Ratio

• Coolant (40%) and distilled water (60%) for freeze protection down to -25 °C (-13 °F)
• Coolant (50%) and distilled water (50%) for freeze protection down to -36 °C (-32.8 °F)

-- Close the drain plug -1-.

Fig 1: Identifying Coolant Drain Plug

Courtesy of AUDI OF AMERICA, LLC

Vehicles with Transmission Fluid Heater 

Fig 2: Coolant Hoses And Hose Clamps

Courtesy of AUDI OF AMERICA, LLC

-- Connect the coolant hoses with the hose clamps -1 and 2-.

Continuation for All Vehicles 

Fig 3: Filling Coolant Reservoir Of Cooling System Charge Unit VAS 6096

Courtesy of AUDI OF AMERICA, LLC

-- Fill the VAS6096 with 10 liters (10.5 quarts) of coolant in the correct mixture ratio, mixture ratio, refer to Coolant Mixture Ratio  above.

-- Install the Cooling System Tester - Adapter VAG1274/8 on the coolant expansion tank.

-- Attach the Cooling System Charge Kit VAS6096 on the Cooling System Tester - Adapter VAG1274/8.

-- Place the air outlet hose -1- in a small container -2-.

-- Close valves -A and B- by turning lever at a right angle to direction of flow.

-- Connect the hose -3- to compressed air.

• Pressure: 6 to 10 bar (87 to 145 psi) positive pressure.

-- Open valve -B- by turning level in direction of flow.

Fig 4: Cooling System, Draining And Filling

Courtesy of AUDI OF AMERICA, LLC

• The suction jet pump generates pressure in the coolant system; indicator on display instrument must move into green area.

-- Briefly open valve -A- by turning lever in direction of flow so that hose on the Cooling System Charge Kit VAS6096 coolant reservoir fills with coolant.

-- Close valve -A- again.

-- Leave valve -B- open another two minutes.

• More pressure is generated in the coolant system by the suction jet pump; indicator on display instrument must stay in green area.

-- Close valve -B-.

• Needle in the display instrument must remain in the green region, then the sufficient vacuum in the cooling system is obtained for the upcoming filling.

-- Remove pressurized air hose.

-- Open valve -A-.

• Coolant is extracted from the Cooling System Charge Kit VAS6096 coolant reservoir by pressure in the coolant system and the system is filled.

-- Remove the Cooling System Charge Kit VAS6096 from the Cooling System Tester - Adapter VAG1274/8 on coolant expansion tank.

-- Connect the Cooling System Tester - Adapter VAG1274/10 to the Cooling System Tester - Adapter VAG1274/8.

Fig 5: Identifying Special Tools - V.A.G 1274/10 & V.A.G 1274/8

Courtesy of AUDI OF AMERICA, LLC

-- Fill the coolant until the coolant system tester tube is full. Fill again during the bleeding procedure if necessary.

-- Remove the seal -3-.

Fig 6: Identifying Clips -1- & Remove Plenum Chamber Cover -2-

Courtesy of AUDI OF AMERICA, LLC

-- Open the clips -1- and remove the plenum chamber cover -2-.

-- Disconnect the heat exchanger coolant hose and pull it back until coolant starts to drain out of the bleed hole -arrow- in the coolant hose.

Fig 7: Locating Heat Exchanger Bleeder Hole

Courtesy of AUDI OF AMERICA, LLC

-- Slide the coolant hose onto the connection and secure with a spring clamp.

-- If the vehicle has a parking heater, switch it on for about 30 seconds.

-- Close coolant reservoir cap.

-- Start the engine.

-- Set the temperature to "HI" for all zones and set the fan speed as low as possible (0).

-- Press the AC  button to turn off the Air Conditioning (A/C) compressor.

• The LED in the button must not come on.

-- Run the engine at 2000 RPM for 3 minutes.

-- Run the engine at idle until both large coolant hoses on the radiator are warm.

-- Run the engine at 2000 RPM for 2 minutes.

-- Turn off engine and allow it to cool off.

-- Install the noise insulation, refer to OVERVIEW - NOISE INSULATION . -

-- Check the coolant level.