Draining Coolant (High-Temperature Cooling System)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Toxic substances

Danger of poisoning or suffocation
Danger of burns to the eyes and skin

→ Ventilate the work area well.

→ Never ingest or inhale.

→ Read specific information on the Hazard Sheet.

→ Do not smoke, eat or drink in the work area.

Information

If larger components (e.g. engine, radiator, etc.) are to be removed/installed, it is absolutely essential to drain the cooling system. Otherwise, hidden air bubbles can prevent the system from filling properly. This results in temperature problems in the cooling and heating systems.

Remove engine guard. → 108019 REMOVING AND INSTALLING ENGINE GUARD
Place a drip tray under the engine.
Open the cap on the coolant reservoir.
WARNING:
Hot fluid
- Danger of scalding
→ Let the fluid cool down.

→ Wear personal protective gear.
Drain coolant at the radiator.
1. 4.1. Pull off quick-connecting lock -arrow- at the bottom right of the radiator.
2. 4.2. Pull coolant hose off the radiator.
3. 4.3. Collect emerging coolant.
  
  Fig 1: Locating Coolant Hose
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Disconnect coolant hose -arrow- from the engine oil cooler and drain coolant.

Fig 2: Locating Engine Oil Cooler Coolant Hose
Courtesy of PORSCHE CARS NORTH AMERICA, INC.