Coolant, Filling
-- Fill with coolant reservoir from the :VAS6096 with 10 liters of coolant with the correct mixture ratio. Refer to Coolant Mixture Ratio for the mixture ratio.
-- Install the :VAG1274/8 on the coolant expansion tank -1-.
-- Attach the :VAS6096 on the :VAG1274/8 .
-- Place the drain hose -2- in a small container -3-.
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 positive pressure.
-- Open the coolant circuit valves and select 01 - coolant circuit bleeding in Guided Functions using the Vehicle Diagnostic Tester.
-- Open the valve -B- by turning the lever in the flow direction.
- 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.
If the needle stands below the green area, repeat the procedure.
If the pressure falls, check the coolant system for leaks.
-- 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.
The hose connections as well as air duct pipes and hoses must be free of oil and grease before installing.
-- Install the noise insulation. Refer to OVERVIEW - NOISE INSULATION .
-- 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.
-- 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 coolant expansion tank cap -arrow- until it locks into place.
-- Let the engine run at idle until both large coolant hoses on the radiator are warm.
-- Turn off the engine.