Coolant drain and flush step by step instructions needed

Tiny
CORY2427
  • MEMBER
  • 2012 VOLKSWAGEN BEETLE
  • 2.5L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 95,010 MILES
Trying to get step by step on draining all or most coolant out and burp system.
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Monday, August 12th, 2019 AT 10:49 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

Here is a link that explains how to drain and flush a cooling system:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Now, here are the directions specific to your vehicle. Note that they want the system to be pressure bleed.

___________________________________________

2012 Volkswagen Beetle (5C1) L5-2.5L (CBTA)
Coolant, Draining and Filling
Vehicle Engine, Cooling and Exhaust Cooling System Service and Repair Procedures Coolant, Draining and Filling
COOLANT, DRAINING AND FILLING
Coolant, Draining and Filling

Special tools, testers and auxiliary items required

Refractometer (T10007A)

Shop Crane - Drip Tray (VAS6208)

Hose Clip Pliers (VAS6340)

Cooling System Charge Kit (VAS6096)

Cooling System Tester - Adapter (VAG1274/8)

Protective eyewear

Safety Gloves

Draining

ATTENTION!
Risk of scalding due to hot steam and hot coolant.

The coolant system is under pressure when the engine is warm.

Cover the coolant reservoir cap with a cloth and then open it slowly to release the pressure.

- Carefully open the fuel cap - 1 - on the coolant reservoir - 2 - in direction of - arrow -.

pic 1

- Remove the noise insulation.

- Place the Shop Crane - Drip Tray (VAS6208) underneath.

- Open the spring clamp - 1 - and remove the coolant hose - 2 -.

pic 2

Drained coolant must be stored in a clean container for disposal or reuse.

Filling

The mixture of the water used greatly influences the effectiveness of the coolant. Volkswagen has decided to define the water quality used in the cooling system based on the different mixtures and country and regional requirements. Distilled water fulfills all requirements.

Use only coolant additives listed. Refer to the Parts Catalog. Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage.

Coolant with the correct mixture ratio prevents freezing and corrosion damage and calcium deposits. Additionally, the boiling temperature will be raised. For this reason the cooling system must be filled with coolant additive year-round.

Because of its high boiling point, the coolant contributes to engine reliability under heavy engine loads, particularly in countries with tropical climates.

Freeze protection must be guaranteed down to approximately -25 C (-13 F) (in arctic climatic countries down to approximately -36 C).

The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The coolant additive portion must be at least 40%.

If a lower freeze protection is necessary due to the climatic conditions, increase the amount of coolant additive. The maximum amount is 60%. If the amount is increased beyond that, the freeze protection will be reduced and cooling effect will be reduced.

The Refractometer (T10007A) MUST be used to determine the freeze protection density.

pic 3

Read the freeze protection value on the scale for the coolant additive that has been added.

Do not reuse used coolant.

Coolant Mixture Ratio

pic 4

1) The amount of coolant may vary depending on vehicle equipment.

Coolant. Refer to the Parts Catalog.

- Connect the coolant hose - 2 - to the radiator and secure it with a spring clamp - 1 -.

pic 5

- Fill the Cooling System Charge Kit - Reservoir (VAS6096/1) on the Cooling System Charge Kit (VAS6096) with at least 10 liters (10.56 quarts) of coolant.

pic 6

- Use the proper mixture ratio of coolant.

- Install the Cooling System Tester - Adapter (VAG1274/8) on the coolant expansion tank.

- Mount the Cooling System Charge Kit (VAS6096) on the Cooling System Tester - Adapter (VAG1274/8).

- Place the drain hose - 1 - in a small container - 2 -.

A small amount of coolant which should be collected is drawn off with the discharged air.

- Close valves - A and B - by turning lever at a right angle to the flow direction.

- Connect the hose - 3 - to compressed air.

Pressure: 6 to 10 bar (87 to 145 psi) positive pressure.

- Open the valve - B - by turning the lever in the flow direction.

pic 7

A further vacuum is created in the cooling system by the suction jet pump.

The needle on the instrument display must travel into the green region.

- Open the valve - A - slightly for a moment.

- To do this, turn the lever in the flow direction so that the Cooling System Charge Kit - Reservoir (VAS6096/1) hose fills with coolant.

- Close the valve - A - again.

- Leave the valve - B - open another two minutes.

A further vacuum is created in the cooling system by the suction jet pump.

Needle on the instrument display must still remain in the green region.

- Close the valve - B -.

The needle on display must remain in the green range.

Only then is there enough vacuum in the coolant system for the filling.

Repeat the procedure if the needle goes below the green range.

Check the cooling system for leak if the pressure drops.

- Remove the pressure hose.

- Open the valve - A -.

The vacuum in the cooling system causes coolant to be extracted from the Cooling System Charge Kit - Reservoir (VAS6096/1) and to fill the cooling system.

- Remove the Cooling System Charge Kit (VAS6096) from the coolant reservoir.

- Fill up the coolant reservoir - 1 - with coolant to the "max" marking - arrow -.

pic 8

- Install the noise insulation.

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

- Set the temperature at "HI".

- Press AC to turn off the A/C compressor.

The LED in the button must not come on.

- Start the engine and run it at approximately 1500 RPM for a maximum of two minutes.

- With engine running, fill coolant up to overflow hole on coolant expansion tank.

- Close the coolant reservoir cap until it locks into place.

- Allow engine to run at idle until both large coolant hoses on the radiator are warm.

- Turn off engine and allow it to cool off.

- Check the coolant level in the coolant reservoir - 1 -.

pic 9

The coolant level must be between the "min" and "max" markings when the engine is cold.

The coolant level may be at the "max" marking - arrow - when the engine is warm.

- Add more coolant if necessary.

______________________________

Let me know if this is what you needed.

Take care,
Joe
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Tuesday, August 13th, 2019 AT 7:42 PM
Tiny
CORY2427
  • MEMBER
Is all this tool stuff necessary? Can t you just drain out with plug and hoses if have to then flush with water then top off with coolant?
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Tuesday, August 13th, 2019 AT 8:20 PM
Tiny
CORY2427
  • MEMBER
It self bleeds through puke tank.
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Tuesday, August 13th, 2019 AT 8:20 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

You can do it that way, but to flush the block, you need to remove the thermostat. As far as bleeding, it can be a pain.
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Tuesday, August 13th, 2019 AT 10:26 PM
Tiny
CORY2427
  • MEMBER
Thought you didn t really have to bleed them if they had puke tank?
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Wednesday, August 14th, 2019 AT 12:07 AM
Tiny
CORY2427
  • MEMBER
What be easy way to bleed with out tool?
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Wednesday, August 14th, 2019 AT 9:19 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

Without the tool, the best way is as mentioned in the aforementioned link. Just pour as much in as possible until full. Do it slowly so it can make it's way through the system. When you do this, make sure the heater is on high when you first started. That way the heater core will fill too. Then return to the directions in the link.

Let me know if I can help.

Joe
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Thursday, August 15th, 2019 AT 6:05 PM

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