Bleed Cooling System.

WARNING: This page is about a different car, the 2024 Audi A3 Quattro and 2024 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Procedure

-- 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.

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

-- Turn off the engine, check the coolant level and fill with coolant. Refer to COOLANT LEVEL, CHECKING AND FILLING .