Draining Coolant

WARNING: Hot fluid

Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.

Information

For work on the vehicle for which the cooling system must be opened, always drain the complete cooling system.
This is necessary in order to ensure that the system is filled and bled correctly.
Never disconnect partial sections when replacing individual components.

Information

Refer to operating instructions for the > VAS 531 011 - cooling system servicing equipment for further detailed information.
Follow the instructions on the screen of the > VAS 531 011 - cooling system servicing equipment .
Make sure there is enough space in the DRAIN container. The DRAIN container has a capacity of 28 litres.
Before starting the service, fill the NEW container with coolant.
The service hose must never be disconnected from the equipment.

Information

Before draining the cooling system, the pumps for preventing the system from running dry must be deactivated and the valves must be moved to filling position.
Once the drain/fill mode is activated in the thermal management control unit, it remains active until the Bleed cooling system function has been performed, even when the 12 Volt battery is disconnected.

Activate cooling system fill mode using the PIWIS Tester .
1. 1.1 Clear thermal management control unit error memory.
2. 1.2 Select the Thermal management/Drain and fill cooling systems procedure in the Maintenance/repairs menu and press to continue.
3. 1.3 Activate Drain and fill coolant mode with, waiting until activation is displayed.
  Information
  - The amount of coolant drained should be approx. 16 to 17 litres.
  - The coolant is drained at 3 positions on the vehicle: coolant hoses to the front left radiator, high-voltage battery inlet, coolant hoses for rear axle final drive.
  - Always comply with the specifications for compressed air!
Unscrew cap -1- on the coolant reservoir.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant reservoir cap
Connect the service hose to the coolant reservoir adapter and to the compressed air coupling connection on the > VAS 531 011 - cooling system servicing equipment .

Drain coolant at the rear drive axle plug-in coupling .

4.1 Position the > VAS 531 011 - cooling system servicing equipment under the connection point to collect the coolant.
4.2 Select Vehicle maintenance in the main menu and select Drain system .

4.3 Pull plug-in coupling -1- at the bottom out of holder -2- . Pull spring clamp -3- until it engages and detach plug-in coupling.

Drain coolant through funnel.

Do not open the upper plug connection!

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Coolant hoses for rear drive axle

4.4 Close off front coolant hose -4- using > 3093 - hose clamp .
4.5 Select Vehicle maintenance in the main menu and select Drain system .
4.6 Follow the on-screen instructions and blow out coolant until there are only drops of coolant or air flows out.
4.7 Follow the on-screen instruction down arrow in Drain system .
4.8 This step can be repeated several times.
4.9 Remove > 3093 - hose clamp on the front coolant hose -4- and close off the rear coolant hose -5- .
4.10 Repeat Drain system procedure.
4.11 Follow the on-screen instructions and blow out coolant until there are only drops of coolant or air flows out.
4.12 Follow the on-screen instruction down arrow in Drain system .
4.13 This step can be repeated several times.
4.14 Close plug-in coupling, lock spring clamp and remove > 3093 - hose clamp .

Drain coolant at the high voltage battery inlet .

Cover nearby components with protective sheeting!

5.1 Position the > VAS 531 011 - cooling system servicing equipment under the connection point to collect the coolant.

5.2 Disconnect plug-in coupling -1- at the connection piece to the high-voltage battery (do not remove). Pull spring clamp -2- downwards until it engages.

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Coolant connection input high-voltage battery

5.3 Position > VAS 6675A - funnel -1- under plug-in coupling -2- . Remove plug-in coupling and drain coolant through the funnel.

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Special "flexible" funnel

5.4 Then, close off the coolant hose using > 3093 - hose clamp .

5.5 To make it easier to drain the system, insert a transparent 16 mm hose -1- into connection opening -2- and allow coolant to drain though the funnel.

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Coolant draining hose

5.6 Select Vehicle maintenance in the main menu and select Drain system .
5.7 Follow the on-screen instructions and blow out coolant until there are only drops of coolant or air flows out.
5.8 Follow the on-screen instruction down arrow in Drain system .
5.9 This step can be repeated several times.
5.10 Close plug-in coupling on connection piece for high-voltage battery input and lock spring clamp.

Drain coolant at the front left radiator .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant hoses on front radiator

6.1 Position the > VAS 531 011 - cooling system servicing equipment under the connection point to collect the coolant.
6.2 Open spring band clamp -2- and detach coolant hose Allow the coolant to run through the funnel.
6.3 Close off coolant hose -1- using > 3093 - hose clamp .

6.4 To make it easier to drain the system, insert a 16 mm transparent hose -1- into connection opening -2- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant draining hose (shown at the battery connection piece)

6.5 Select Vehicle maintenance in the main menu and select Drain system .
6.6 Follow the on-screen instructions and blow out coolant until there are only drops of coolant or air flows out.
6.7 Follow the on-screen instruction down arrow in Drain system .
6.8 This step can be repeated several times.
6.9 Connect the coolant hose to the radiator and close the spring band clamp.
6.10 Remove > 3093 - hose clamp .