Cooling System, Bleeding

-- 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.

-- 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.

-- Let the engine cool.

-- Check the coolant level and freeze protection.

-- If the freeze protection is not sufficient, extract the coolant from the coolant expansion tank. After filling with coolant concentrate adjust the correct freeze protection.

-- After filling with coolant concentrate, let run for approximately two minutes with raised speed and check the freeze protection again.

• Freeze protection must be assured down to minimum -25 °C (13 °F) (in arctic climatic countries down to approximately -36 °C (33 °F)). The freeze protection may only be increased, when stronger freeze protection is needed due to the climate. But only down to -48 °C (54 °F), otherwise the effectiveness of the coolant decreases.
• When the engine is warm, the coolant must be at the >>weld seam<< -arrow-.

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

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

Coolant Flushing and Filling Device:VAS531007  , Cleaning:

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• If the coolant is in the viewing glass for a longer time, discoloration can occur. For this reason the viewing glass must be flushed with distilled water after the flushing procedure.
• If the viewing glass is colored it must be cleaned with a nylon brush.
• Use the cleaning adapters item 13) COOLANT, DRAINING AND FILLING WITHOUT COOLING SYSTEM CHARGE KIT - ELECTRIC VACUUM PUMP:VAS6096/2  to flush.

-- Connect the suction hose -5- to the reservoir -1- for distilled water.

-- Connect the flushing hose -10- on the cleaning adapters -9-. Connect the cleaning adapter -9- on the connector coupling -B- on the valve block -8-.

-- Open the shut-off valves -A- and -B- on the valve block -8-.

-- Switch on the pump -7- and pump distilled water through the hoses until the coolant in the viewing glass -6- is rinsed out.

-- Switch off the pump and close the shut-off valves.

-- Remove the cleaning adapters and seal the flushing hose again with plugs.