Coolant, Filling

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required

Cooling System Charge Kit:VAS6096
Cooling System Tester - Adapter:VAG1274/8
Refractometer:T10007A

WARNING:

The coolant system is under pressure when the engine is warm.

Risk of scalding due to hot steam and hot coolant.

Reduce pressure by covering coolant reservoir cap with a cloth and carefully opening.

CAUTION:

The coolant system must be drained if larger components (for example, engine, radiator, etc.) are going to be removed and installed. Refer to ENGINE COOLANT SYSTEM, DRAINING, VEHICLES WITH ONE HEATER CORE . Otherwise an incorrect filling will result due to air bubbles in the system. The cooling and heating systems will have temperature problems.

CAUTION:

Only mix distilled water with coolant additives. Using distilled water provides optimum corrosion protection.

NOTE:

The water portion of the coolant influences the effectiveness of the coolant. Based on the contents, the country or even the region specific quality can be different. Use distilled water. For this reason, we recommend using distilled water when adding coolant or filling coolant for the first time.

Use only coolant additives listed in the Parts Information. Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage.

Coolant with the correct mixture ratio prevents freezing and corrosion damage and calcium deposits. The boiling point will be raised. The cooling system must be filled with coolant additive year-round.

Because of its high boiling point, the coolant contributes to engine reliability under heavy loads, particularly in countries with tropical climates.

The :T10007A MUST be used to determine the freeze protection value.

Fig 1: Freeze Protection Value On Scale

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Protection against frost must be assured down to minimum -25 °C (-13 °F) (in arctic climatic countries down to approximately -36 °C (-32.8 °F)). When stronger freeze protection is needed due to the climate, the freeze protection may be increased. But only up to -48 °C (-54 °F), otherwise the effectiveness of the coolant decreases.

The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The frost protection must be at least -25 °C (-13 °F).

Read the freeze protection value on the scale for the coolant additive that has been added.

The temperature on the :T10007A corresponds to the >>freezing point<<. At this temperature, ice crystals may begin to form in the coolant.

Do not reuse used coolant.

Only use water/coolant additive to lubricate the coolant hoses.

-- Fill the coolant reservoir on the :VAS6096 with at least 15 liters (15.8 qts) of premixed coolant with the proper mixture ratio.

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

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

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

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

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

NOTE:

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

-- 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 3: Cooling System, Draining And Filling

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

At least 0.7 bar (10.1 psi) vacuum must be produced.

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

-- Close valve -A- again.

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

A further vacuum is created in the cooling system by the suction jet pump.

-- Close valve -B-.

Fig 4: Cooling System, Draining And Filling

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove pressurized air hose.

-- Watch the pressure Gauge. The vacuum may Go down only to 0.4 bar (5.8 psi). Check the coolant system for leaks if the vacuum continues to fall.

NOTE:

The cooling system does not have any leaks if the vacuum falls but then stabilizes at minimum 0.4 bar (5.8 psi).

Perform the next filling >>slowly<<.

-- Open the valve -A- slowly.

Fig 5: Cooling System, Draining And Filling

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

-- Remove the : VAS6096 from the :VAG1274/8 on coolant expansion tank.

-- Check the coolant level inside the reservoir. Fill or drain if necessary.

Fig 6: Checking Coolant Level

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Check the coolant freeze point. Refer to FILL QUALITY, CHECKING .