Coolant, Filling

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2017 Audi A5 Quattro, 2016 Audi A5 Quattro, 2015 Audi A5 Quattro, 2014 Audi A5 Quattro, and 2014 Audi A5. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Used Coolant Cannot Be Used Again.

-- Fill with coolant reservoir from the :VAS6096 with 10 liters (10.5 quart) of premixed coolant in the correct mixture ratio. Refer to COOLANT MIXTURE RATIO for the mixture ratio.

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

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

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

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 -3- to compressed air.

Pressure: 7 to 10 bar (101.52 psi to 145.03 psi) positive pressure.

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

Courtesy of AUDI OF AMERICA, LLC

The suction jet pump generates pressure in the coolant system; indicator on display instrument must move into green area.

-- Additionally 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.

NOTE:

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 :VAG1274/8 on the coolant expansion tank.

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

Fig 1: Identifying Special Tools - V.A.G 1274/10 & V.A.G 1274/8

Courtesy of AUDI OF AMERICA, LLC

-- Fill the :VAG1274/10 with coolant. Fill again during the bleeding procedure if required.

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

-- Loosen the coolant hose to the heater core for the heater and pull back until the connection no longer covers the bleed hole -arrow- in the coolant hose.

Fig 2: Locating Heat Exchanger Bleeder Hole

Courtesy of AUDI OF AMERICA, LLC

-- Fill with coolant until it escapes from the coolant hose bleed hole.

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

-- Close the coolant expansion tank cap.

-- Start the engine.

-- Adjust the temperature for all zones to "HI".

-- Set the fresh air blower to the lowest level.

-- 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 three 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.

-- On a vehicle with a parking heater turn it on for approximately 30 seconds and let the engine idle.

-- Install the front noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING / OVERVIEW - NOISE INSULATION .