Removing Oil/Water Heat Exchanger (Oil Cooler) On DFI Engines

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: Danger of burns from hot engine oil!

→ Allow engine to cool down.

→ Wear personal protective gear (e.g. safety goggles, gloves).

Remove two fastening nuts for the hose holder and press the holder aside -arrows- .

Fig 1: Locating Hose Holder Nuts
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Information
- When opening the oil/water heat exchanger, collect emerging fuel (engine oil and coolant) with a pan and cloth .
Remove the two coolant hoses from the oil/water heat exchanger -arrow- .

Fig 2: Locating Coolant Hoses On Oil/Water Heat Exchanger
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Grip the oil cooler cover at the hexagon with a suitable tool and loosen carefully. Take oil cooler cover (banjo bolt) out of the oil/water heat exchanger and remove together with the oil/water heat exchanger.
Observe installation position of both sealing rings. Sealing rings must be replaced.
Clean sealing faces.