Coolant, Filling

• Used coolant cannot be used again.

-- 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.

-- To make the filling procedure easier, position the coolant reservoir as high up as possible, for example on a workshop cart or the engine and gearbox jack.

-- Install the Cooling System Tester - Adapter:VAG1274/8  on the coolant expansion tank -1-.

-- Attach the Cooling System Charge Kit:VAS6096  on the Cooling System Tester - Adapter:VAG1274/8  .

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

TIP:

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: 7 to 10 bar (101.53 to 145.04 psi) positive pressure.

-- 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 :VAS6096  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-.

• 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.
• 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 Cooling System Charge Kit :VAS6096  coolant reservoir by pressure in the coolant system and the system is filled.

-- Remove the Cooling System Charge Kit:VAS6096  from the Cooling System Tester - Adapter:VAG1274/8  on the coolant expansion tank.

Bleed the Charge Air Cooling Circuit Cooler, 2.9L Engine:

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-- Push the Cooling System Tester - Adapter: VAG1274/10  onto the Cooling System Tester - Adapter :VAG1274/8  .

-- Fill with coolant until the Cooling System Tester Tube:VAG1274/10  is full. Fill again during the bleeding procedure if required.

-- Remove the lock carrier cover. Refer to OVERVIEW - BUMPER COVER .

-- Place a cloth underneath to catch any escaping coolant.

-- Open up the bleed screw -arrow- at the charge air cooling circuit cooler.

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-- As soon as coolant leaks, close the bleed screw.

-- Detach the Cooling System Tester - Adapter:VAG1274/10  and the Cooling System Tester - Adapter:VAG1274/8  .

Bleeding the Cooling System, All Engines:

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

• Selector level in the "P" position.
• Electromechanical parking brake activated.
• Front lid closed.
• DTC memory checked.

-- Connect the Vehicle Diagnostic Tester.

-- Select Diagnostic  and start.

-- Select Individual tests  and select the following tree structures one after the other:

• Diagnostic-capable systems 
• 0001 - Engine electronics J623 
• 0001 - Engine electronics functions 
• 0001 - Coolant circuit bleeding procedure 

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

Coolant Level, Checking

• Coolant level must be at the "MAX" mark when the engine is cold.
• Coolant level may be above the "MAX" mark with engine at operating temperature.

-- If necessary, fill the coolant again.

Tightening Specifications

• Refer to OVERVIEW - RADIATOR/RADIATOR FAN 
• Refer to OVERVIEW - BUMPER COVER .
• Refer to OVERVIEW - FRONT WHEEL HOUSING LINER .
• Refer to OVERVIEW - NOISE INSULATION .