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Home >> Volkswagen >> 2021 >> Jetta SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Engine Cooling System (General & Service Information - CVCA, CUUA, CUUB, DELA, DEBA, DEJA, DGMA)) >> 19 Cooling System >> Cooling System/Coolant >> Cooling System, Flushing >> Cooling System, Flushing With Coolant

Cooling System, Flushing With Coolant

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.
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-- Attach the suction hose -A- to the coolant container -2-.

1. Cylinder Block And Cylinder Head, Flushing With Coolant 

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-- Use hose clamps to clamp off the bleeder hoses at the locations indicated.

-- Open the shut-off valve -A- on the valve block. Coolant is now pumped through the engine.

-- Monitor the sight window: if coolant can be seen escaping in the window, close the shut-off valve -A-.

2. Heater Core For The Heater, Flushing With Coolant 

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-- Use hose clamps to clamp off the bleeder hoses at the locations indicated.

-- Open the shut-off valve -A- on the valve block. Coolant is now pumped through the engine.

-- Monitor the sight window: if coolant can be seen escaping in the window, close the shut-off valve -A-.

3. Radiator, Flushing With Coolant 

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-- Use hose clamps to clamp off the bleeder hoses at the locations indicated.

-- Open the shut-off valve -A- on the valve block. Coolant is now pumped through the engine.

-- Monitor the sight window: if coolant can be seen escaping in the window, close the shut-off valve -A-.

4. Charge Air Cooler And Charge Air Cooling Circuit Cooler, Flushing With Coolant 

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-- Use hose clamps to clamp off the bleeder hoses at the locations indicated.

-- Open the shut-off valve -A- on the valve block. Coolant is now pumped through the engine.

-- Monitor the sight window: if coolant can be seen escaping in the window, close the shut-off valve -A-.

Repeat the flushing procedures 1 through 4, but only pump through approximately one liter of coolant each time. Refer to COOLING SYSTEM, FLUSHING . Then the flushing procedure is complete:

-- After the flushing procedure, switch off the pump.

-- Remove all hose clamps.

Coolant Flushing and Filling Device :VAS531007  , Removing:

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-- Open the shut-off valve -B- and leave it open, so that the pressure in the cooling system reduces.

-- Remove the plug -3- from the coolant expansion tank and reconnect the bleeder hose -2-.

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-- Seal the flushing hose -1- with the plug.

-- Remove the valve block -1- and test adapter -2-.

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-- The coolant must be at the >>weld seam<< -arrow-.

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-- If necessary, extract or add coolant.