Bleed Cooling System

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi A6 Quattro, 2017 Audi A6, and 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove The Plenum Chamber Cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- 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-.

Courtesy of AUDI OF AMERICA, LLC

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

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

-- Close coolant reservoir 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 Air Conditioning (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.

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

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

-- Install The Front Noise Insulation. Refer to FRONT NOISE INSULATION, REMOVING AND INSTALLING .