Coolant Mixture Ratio

WARNING: This page is about a different variant/trim than selected.

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 (-33°F)
Refer to the Parts Information for the correct coolant.

Procedure

Fig 1: Component Location Engine Coolant Temperature Sensor

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the coolant hose and lower right coupling -3- to the radiator.

-- Fill the coolant reservoir from the Cooling System Charge Kit : 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 positive pressure.

-- Connect the Vehicle Diagnostic Tester.

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

0001 - Cooling system filling/bleeding

Fill the Coolant:

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

Fig 3: Cooling System, Draining And Filling

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A further vacuum is created in the cooling system by the suction jet pump.
The needle on the instrument display must travel into the green region.

-- Open the valve -A- for a moment.

-- To do this, turn the lever in the direction of flow so that the : VAS6096/1 hose fills with coolant.

-- Close the valve -A- again.

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

A further vacuum is created in the cooling system by the suction jet pump.
Needle on the instrument display must still remain in the green region.

-- Close the valve -B-.

The needle on display must remain in the green range.
Only then is there enough vacuum in the coolant system for the filling.

NOTE:

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

Check the cooling system for leaks if the pressure drops.

Perform the next filling >>slowly<<.

-- Remove the pressure hose.

-- Open the valve -A- slowly.

The vacuum in the cooling system causes coolant to be extracted from the : VAS6096/1 and to fill the cooling system.
After filling the coolant level must be over the MAX mark.

-- Remove the : VAS6096 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 AC 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.

-- Allow the engine to 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 in the coolant expansion tank -1-.

Fig 4: 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.
The coolant level may be at the "max" marking -arrow- when the engine is warm.

-- If necessary, fill the coolant again.