Manual:AUDI A3 Premium, 4D Sedan 2015Page:19600 / 92758



Bleed The Cooling System: Notes — 2015 Audi A3 Premium, 4D Sedan Service Manual

Bleed The Cooling System: Notes

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-- Coolant must be filled up to the MAX mark.

-- Start the engine.

-- 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.

-- Set the A/C system fresh air blower to the lowest setting.

-- Connect the Vehicle Diagnostic Tester.

-- Select Diagnostic  operating mode and Start diagnostics  .

-- Select the Select individual test  tab and select the following tree structure consecutively:

  • Drivetrain 
  • Select the engine code and engine 
  • 01 - OBD-capable systems  .
  • 01 - Engine Electronics 
  • 01 - Engine electronics, functions 
  • 01 Filling coolant circuit 

-- Follow the instructions on the Vehicle Diagnostic Tester.

-- Turn off the engine.

-- After the bleeding process, a test of the coolant concentration must be performed. Refer to COOLING SYSTEM, CHECKING COOLANT CONCENTRATION .

Check the coolant level:

CAUTION:

The cooling system is under pressure when the engine is warm. There is a risk of scalding due to hot steam and hot coolant.

Scalding the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Reduce the pressure by covering the coolant expansion tank cap with a cloth and carefully opening it.

-- When the engine is warm, the coolant level must not be above the -weld seam- -arrow-.

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-- When the engine is cold, the coolant level must be approximately 5 mm -arrow- above the MAX mark.

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TIP:

The raised coolant level is necessary, since the coolant level can still sink from the ventilation process.

-- If necessary, fill the coolant again.

-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Erase the DTC memory using the Vehicle Diagnostic Tester.