Cooling System, Bleeding

WARNING: This page is about a different car, the 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

-- If the vehicle has a parking heater, switch it on for about 30 seconds.

-- 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.

-- Turn on the ignition and select the following menu item using the Vehicle Diagnostic Tester.

0001 - Engine Electronics
0001 - Engine Electronics Functions
0001 - Coolant Circuit, Filling

NOTE:

By bleeding the cooling system is largely bleed. For this reason a >>shorter<< bleeding can be performed with the Vehicle Diagnostic Tester. Answer yes to the question "Was the cooling system filled using the electric vacuum pump", to perform the >>shorter<< bleeding.

-- Follow the instructions given in 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 (-32.8 °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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NOTE:

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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NOTE:

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 ) Cleaning Adapters- 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.