Coolant Mixture Ratio

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Frost protection to

Portion of Coolant Additive

Coolant Additive ⁽¹⁾

Distilled Water⁽¹⁾

-25 °C -36 °C (-13 °F -32.8 °F)

40 % 50 %

3.2L 4.0L

4.8L 4.0L

⁽¹⁾	The amount of coolant may vary depending on vehicle equipment.

Coolant. Refer to the Parts Information.

Procedure

-- Connect coolant hose and lower right coupling -1- to the radiator. Refer to Figure.

Fig 1: Identifying Coolant Hose And Lower Right Coupling

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-- Fill the coolant reservoir from the : VAS6096 with 10 liters of coolant with the correct mixture ratio. Refer to Coolant Mixture Ratio for the mixture ratio.

Fig 2: Filling Coolant Reservoir Of Cooling System Charge Unit VAS 6096

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the : VAG1274/8 on the coolant expansion tank.

-- Secure the : VAS6096 on the : VAG1274/8 .

-- Place the drain hose -1- in a small container -2-.

NOTE:

A small amount of coolant which should be collected is drawn off with the discharged air.

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

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

Pressure: 6 to 10 bar (87.02 to 145.03 psi) negative pressure.

-- Connect the Vehicle Diagnostic Tester.

-- Turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

01 - Engine Electronics
Guided Functions
01 - Cooling system filling/bleeding

-- Open the valve -B- by turning the lever in the flow direction.

Fig 3: Cooling System, Draining And Filling

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

-- Briefly open the valve -A- by turning the lever in the flow direction so that the hose on the : VAS6096 coolant expansion tank fills with coolant.

-- Close the valve -A- again.

-- Leave the 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 the green area.

-- Close the valve -B-.

-- Remove the pressure hose.

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.

NOTE:

Repeat the procedure if the needle goes below the green range.

Check the cooling system for leaks if the pressure drops.

-- Open the valve -A- slowly.

Coolant is extracted from the : VAS6096 coolant reservoir by pressure in the coolant system and the system is filled.

-- Remove the : VAS6096 from the coolant expansion tank.

-- Fill the coolant to the MAX marking.

Fig 4: Identifying Coolant Reservoir Cap

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-- Install the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

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

-- Set the temperature to "HI".

-- Press the AC button to turn off the A/C compressor.

The LED in the button must not come on.

-- Start the engine and run it at approximately 1500 RPM for a maximum of two minutes.

-- With engine running, fill coolant up to overflow hole on coolant expansion tank.

-- Close the cap on the coolant expansion tank until it locks into place.

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

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

-- Check the Coolant Level.

Fig 5: Identifying Coolant Reservoir

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The coolant level must be between the "min" and max markings when the engine is cold.
Coolant level may be at the MAX marking with engine at operating temperature.

-- If necessary, fill the coolant again.