Coolant, Draining And Filling: Filling: Procedure

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, and 2016 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

-- Attach the left coolant hose to the bottom of the radiator. Refer to Figure.

-- Connect the lower right coolant hose to the charge air cooling circuit cooler -arrow-.

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-- Fill with coolant reservoir on the :VAS6096 with at least ten liters (10.5 quarts) of premixed coolant with the proper mixture ratio:

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

-- Attach the :VAS6096 to the :VAG1274/8 .

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

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 -4- to compressed air.

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

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

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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 flow direction 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-.

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.

-- Remove the pressure hose.

-- Open the valve -A-.

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 with coolant up to "max" marking.

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-- Install the noise insulation. Refer to 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.

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

-- Start the engine and allow it to run alternating between 1500 RPM up to maximum 2800 RPM until the radiator fan starts running.

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

-- Check The Coolant Level.

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

-- Give 1 bar (14.5 psi) pressure to the cooling system using the :VAG1274B .

-- Then reduce the pressure on the tester and remove the :VAG1274B .

-- When the engine is running, fill coolant up to approximately 5 mm over the MAX mark.

The coolant level must be between the "min" and "max" mark when the engine is cold.
Coolant level may be on or above the "max" mark when the engine is at operating temperature.