Cooling System, Filling

Special tools and workshop equipment required 

• Cooling System Service Station :VAS 531 011 

Cooling System, Filling

Condition

• Pay attention to the operating instructions for the Cooling System Service Station :VAS 531 011  .

-- Fill the "New" reservoir of the Cooling System Charge Kit :VAS 531 011  with a sufficient amount of coolant in the right mixture ratio. Refer to: REPLACEMENT PARTS, OPERATING MATERIALS, AND CONSUMABLES .

-- Make sure that the coolant hoses are connected.

-- Connect the cooling system service station.

-- Select "vehicle maintenance" in the main menu.

-- Select "pressure test" in the menu and perform the hydraulic leak test.

• Testing time => 120 s
• Max. Delta P => 40 mbar (0.58 psi)
• Test pressure => 2000 mbar
• Follow the notes on the display.
• After finishing the test the result is shown.

-- Select "vacuum phase" in the menu and perform the hydraulic leak test.

• Time => 240 s
• Specified value => 40 mbar (0.58 psi)
• Max. Delta P => 30 mbar (0.44 psi)
• Test duration => 120 s
• Follow the notes on the display.
• After finishing the test the result is shown.
• If necessary, repeat the process.

-- In the menu select "system, filling" and perform the filling.

• Capacity => enter 12000 g, corresponds to 12 liter.
• When completing the filling procedure the display shows the filled coolant quantity.
• When completing the filling procedure the service station automatically begins cleaning the hoses.
• Follow the instructions on the display and do not interrupt the procedure.
• After finishing the test the result is shown.
• If necessary, repeat the process.

-- Select "vehicle maintenance" in the main menu.

-- In the menu select "system, bleeding" and perform the bleeding.

• Test pressure => 1800 mbar pressure

-- Perform the "bleeding the cooling system" function using the => Vehicle diagnostic tester. Refer to: Diagnostic Entries .

Condition

• Run the function twice.

-- Remove the adapter with service hose from the coolant expansion tank.

-- Add or extract the coolant.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Condition

• The coolant level must be 10 mm above the MAX mark -1-.

Tip

The increased coolant level is necessary because the coolant level may fall when driving.

-- Refer to: COOLANT CONCENTRATION, CHECKING - COOLING SYSTEM/COOLANT .