Draining Coolant

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2023 Porsche Panamera, 2022 Porsche Panamera, 2021 Porsche Panamera, 2020 Porsche Panamera, and 2019 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Hot fluid

Danger of scalding
→ Avoid contact with hot fluid.

→ Wear personal protective gear.

Information

Vacuum-fill cooling systems with thermal management (controlled thermostats or coolant valves for controlling engine temperature).
The thermostat must not be activated or electric current must not be applied to the thermostat since this can cause irreparable damage to the thermocouple.
Filling with a watering can only does not always guarantee a complete fill.
Clamps on cooling system components should be examined carefully following refilling (check the coolant level while cold and top up several times as required).
Clamps on cooling system components must also be vacuum-filled if significant amounts of coolant are drained. Drain at least two litres of coolant for vacuum-filling because otherwise a vacuum cannot be built up.

Carefully open the coolant reservoir cap -1- .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Opening cap on coolant reservoir
Move service clip -2- on the bleeder valve -3- to a vertical position.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Service clip on bleeder valve
Have a drip pan ready under the radiator.
Loosen spring clamp -4- and disconnect coolant hose -5- on the radiator.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant hose on radiator
Disconnect coolant hoses for heating -1 and 2- on the transmission.
1. 5.1 Screw in adapter KS 65 from > VAS 6562 - Porsche Adapter Set for Cooling System Tester on the coolant reservoir.
2. 5.2 Open clamp on the right coolant hose (return) -2- and pull off coolant hose. Collect emerging coolant.
3. 5.3 Build up air pressure of max. 1 bar via the adapter using > V.A.G 1274B - Tester for Cooling System or compressed air hose and collect remaining coolant.
4. 5.4 Release air pressure.
5. 5.5 Re-fit coolant hose and secure with a spring band clamp.
6. 5.6 Open clamp on the left coolant hose (supply) -1- and disconnect coolant hose. Collect emerging coolant.
7. 5.7 Build up air pressure of max. 1 bar again and collect emerging coolant.
8. 5.8 Release air pressure.
9. 5.9 Re-fit coolant hose and secure with a spring band clamp.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant hoses for heating
If necessary, remove remaining coolant from the coolant reservoir by pulling off the coolant hose.
1. 6.1 Open clamp -11- using > VAS 6890 - Spring Band Clamp Pliers and pull coolant hose -12- off the coolant reservoir.
2. 6.2 Collect emerging coolant.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant hose on coolant reservoir

Information
- On vehicles with auxiliary heating, there are additional drain points.
On vehicles with auxiliary heating: Disconnect coolant hoses.
1. 7.1 Loosen clamps -6- , disconnect coolant hoses -7- and collect emerging coolant.
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant hoses for auxiliary heating
Secure coolant hoses.