Coolant, Draining And Filling: Filling: Procedure

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-- Close the drain plug -1-.

-- Attach the coolant hoses with the hose clamps -2- to the left front coolant pipes.

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-- Connect the coolant hose and hose clamp -arrow- to the left coolant pipe on the transmission.

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

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

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

-- Place the drain hose -1- in a small container -2-.

-- 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: 7 to 10 bar positive pressure.

-- Connect the Vehicle Diagnostic Tester to the vehicle.

-- Select the following menu items on the Vehicle Diagnostic Tester.

• Guided Functions  mode
• 01 - Simos Fuel Injection and Ignition 
• Functions - Engine 
• 01 - Coolant circuit bleeding 

-- Follow the instructions given in the Vehicle Diagnostic Tester.

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

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• The suction jet pump generates pressure 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 :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.

-- 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 :VAG1274/8  on coolant expansion tank.

-- Connect the :VAG1274/10  to the :VAG1274/8  .

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-- Fill with coolant until the cooling system tester tube is full. Fill again during the bleeding procedure if required.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

NOTE:

Place a cloth underneath to catch any leaking coolant.

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-- Open the bleed screws -1 and 2- on the charge air coolers one after the other until coolant starts to come out.

-- Close the bleeder screws.

-- Remove the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Disconnect the heat exchanger coolant hose and pull it back until coolant starts to drain out of the bleed hole -arrow- in the coolant hose.

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-- Slide the coolant hose onto the connection and secure with a spring clamp.

-- Close the bleeder screw.

-- If the vehicle has a parking heater, switch it on for about 30 seconds.

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

-- Start the engine.

-- Set the temperature to "HI" for all zones and set the fan speed (0).

-- Press the AC  button to turn off the A/C compressor.

• The LED in the button must not come on.

-- Run the engine at 2000 RPM for 3 minutes.

-- Run the engine at idle until both large coolant hoses on the radiator are warm.

-- Allow the engine to run for two minutes at 2000/RPM.

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

-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Check the coolant level. Refer to CHECK THE COOLANT LEVEL .