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)
• Refer to the Parts Information for the correct coolant.

Procedure 

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

-- Connect the connector for the Engine Coolant Temperature Sensor on Radiator Outlet --.

-- Fill the coolant reservoir from the Cooling System Charge Kit :VAS 6096  with 10 liters of coolant with the correct mixture ratio. Refer to Coolant Mixture Ratio  for the mixture ratio.

-- Install the Cooling System Tester - Adapter :V.A.G 1274/8  on the coolant expansion tank -1-.

-- Secure the Cooling System Charge Kit :VAS 6096  on the Cooling System Tester - Adapter :V.A.G 1274/8  .

-- Place the drain hose -2- in a small container -3-.

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

-- Connect the hose -4- to compressed air with 6 to 10 bar of pressure.

-- Connect the Vehicle Diagnostic Tester and select the following functions.

• 0001 - Engine electronics functions 
• 0001 - Cooling system filling/bleeding 

Fill the Coolant:

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

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• The suction jet pump generates vacuum 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 Cooling System Charge Kit :VAS 6096  coolant reservoir 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.

-- Open the valve -A- slowly.

• Coolant is extracted from the Cooling System Charge Kit :VAS 6096  coolant reservoir by pressure in the coolant system and the system is filled.
• After filling the coolant level must be over the MAX mark.

-- Remove the Cooling System Charge Kit :VAS 6096  from the coolant expansion tank.

-- 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 coolant expansion tank cap until it locks into place.

-- Let the engine run in idle until the radiator fan switches on.

-- Coolant Level, Checking 

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• When the engine is warm, the coolant must be at the >>weld seam<< -arrow-.
• When the engine is cold, the coolant must be approximately 5 mm -arrow- above the MAX mark.

  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.