Filling Coolant

WARNING: This page is about a different car, the 2024 Porsche 911, 2023 Porsche 911, and 2022 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Caustic fluids

Danger of chemical burns
→ Wear personal protective gear.

→ Ensure that there is good ventilation.

→ Avoid contact with caustic fluid.

→ If you do come into contact, wash off immediately with plenty of warm water and contact a doctor if necessary.

Information

The quantity of coolant available should exceed the amount required to fill the system by about 2 litres in order to prevent air being sucked in.
An antifreeze content of -35°C corresponds to a mixture ratio of 50:50 (coolant/water).

Information

The pressure level in the workshop compressed air system must be at least 8 bar.

Information

A hissing sound after connecting the compressed air supply is normal.

The > 9696 - filling device is used for vacuum-filling.

The > VAS 6096/2 - electric vacuum pump is also required in order to increase the vacuum.

Check the pressure level on the compressed air system and set it to at least 8 bar if necessary.
Information
- Only use Genuine Porsche coolant.
- Never mix coolant with other coolants.
Place a canister with a sufficient amount of coolant and with an antifreeze content of -35°C behind the vehicle at the same height as the reservoir.
Connect > VAS 6096/2 - electric vacuum pump to the power supply and switched it on.
Empty the overflow tank if there is coolant in the overflow tank.

Push the filler hose -2- of the vacuum gauge onto the canister connection. Drain the return hose -4- from the Venturi nozzle into a second empty container.

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Canister at the vehicle

1	Coolant canister
2	Filler hose
3	> 9696 - Filling device
4	Return hose
5	Canister for return hose

Screw > 9696/1 - cap-1- with flexible extension (FZ 100) -2- for vacuum-filling onto the coolant reservoir.
Close both shut-off valves (90° with respect to flow direction). Connect vacuum gauge -3- to the flexible extension.

Connect pressure hose -4- to Venturi nozzle -5- .

Set the pressure level on the workshop pressure system to 8 bar.

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Connecting vacuum-filling device components
Open both shut-off valves on the vacuum gauge until the transparent filler hose is completely filled with coolant.
There must be no air in the filler hose!

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Shut-off valves open

Information
- If no vacuum is built up, there is a leak in the cooling system or the connection pressure is too low.
- Deformation of the rubber hoses in the cooling system is normal.
- When the pressure gauge pointer is in the green area of the display scale, a sufficient vacuum has been built up.
- If both shut-off valves are closed and the compressed air supply is disconnected, the vacuum must not drop.
- If the vacuum drops within approx. 30 seconds, there is a leak in the cooling system.
Close the shut-off valve -Arrow- on the filler hose connection to allow a vacuum to build up.

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Closing shut-off valve on filler hose

A sufficient vacuum has built up in the cooling system when the pointer is in the green area.

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Vacuum built up (pointer in green area)
Check the cooling system for leaks.
To check the system for leaks, a constant vacuum must be present for 15 seconds!

Close shut-off valve -2- for the Venturi nozzle.

Disconnect compressed air hose -4- .

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Shut-off valves closed

Information
- When using the electric vacuum pump VAS 6096/2, always comply with the following instructions:
- Monitor the overflow tank before and while using the electric vacuum pump and empty the tank in good time.
- There must be no coolant in the connecting hose from the overflow tank to the pump - fluid in the pump will damage it irreparably.
- The electric vacuum pump must not be used for more than 5 minutes, otherwise the coolant can evaporate in the system.

Connect > VAS 6096/2 - electric vacuum pump to Venturi nozzle.

Do not use electric vacuum pump for more than 5 minutes!

Open shut-off valve at the Venturi nozzle for the pump connection.

Check the coolant level in the overflow tank while using the electric vacuum pump!

Switch off the electric vacuum pump after 5 minutes and close the shut-off valve at the Venturi nozzle.

Disconnect connecting line from the electric vacuum pump to the Venturi nozzle.

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Electric vacuum pump VAS 6096/2 with Venturi nozzle

1	Filling device 9696
2	Connecting hose to overflow tank
3	Electric vacuum pump VAS 6096/2
4	Overflow tank
5	Hose from overflow tank to electric vacuum pump IMPORTANT: (There must be no coolant in the hose!)
Arrows	Shut-off valves

The pointer -1- on the pressure gauge -2- is approx. 5 mm below the end mark of the green area -Arrow- .
Result: Vacuum is OK!

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Pressure gauge display after using the electric vacuum pump
Check the cooling system for leaks again.
To check the system for leaks, a constant vacuum must be present for 15 seconds!
To fill the system, open the left shut-off valve (right valve remains closed -Arrow- ).

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Filling the cooling system - opening shut-off valve for filler hose
The filling process is complete when the pointer on the pressure gauge stops at zero. Then open the right shut-off valve.
Remove filling device.
Bleed the cooling system.
190107 BLEEDING THE COOLING SYSTEM

For Turbo and Turbo S vehicles, Refer to the appropriate service information.
Check engine coolant level and correct it if necessary.
190101 CHECKING THE COOLING SYSTEM

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Coolant level indicator in the reservoir