Coolant Mixture Ratio

WARNING: This page is about a different car, the 2009 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Coolant (40%) and distilled water (60%) for freeze protection down to -25 °C
Coolant (50%) and distilled water (50%) for freeze protection down to -36 °C
Use approved coolant.

-- Install the Cooling System Charge Kit - Adapter VAG1274/8 on the coolant expansion tank.

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

-- 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.

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

-- Connect the hose -3- to compressed air.

Pressure: 6 to 10 bar positive pressure.

-- Open valve -B- by turning level in direction of flow.

Fig 1: Cooling System, Draining And Filling

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.

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

-- Close valve -A- again.

-- Leave 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 green area.

-- Close 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 needle stands below the green area, repeat procedure.

If pressure falls, check coolant system for leaks.

-- Remove pressurized air hose.

-- Open 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 Charge Kit - Adapter VAG1274/8 on coolant expansion tank.

-- Connect the Cooling System Charge Kit - Pipe VAG1274/10 to the Cooling System Charge Kit - Adapter VAG1274/8.

Fig 2: Identifying Special Tools - VAG 1274/10 & VAG 1274/8

Courtesy of AUDI OF AMERICA, LLC

-- Remove the center piece -2- or the entire plenum chamber cover, depending on the version. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

Fig 3: Identifying Alarm Horn, Removal

Courtesy of AUDI OF AMERICA, LLC

-- Loosen the coolant hose to the heat exchanger and pull it back until the connection no longer covers the bleeder hole in the coolant hose -arrow-.

Fig 4: Locating Heat Exchanger Bleeder Hole

Courtesy of AUDI OF AMERICA, LLC

-- Fill the coolant until it escapes from the coolant hose bleeder hole.

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

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

-- Close coolant reservoir cap.

-- Start the engine.

-- Set the temperature to "HI" for all zones and set the fan speed as low as possible (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.

-- Run the engine at 2000 RPM for 2 minutes.

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

-- Install the front noise insulation. Refer to OVERVIEW - NOISE INSULATION .