Preliminary Work

WARNING: This page is about a different car, the 2014 Porsche Cayenne, 2013 Porsche Cayenne, 2012 Porsche Cayenne, and 2011 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Hot fluid

Danger of scalding
→ Let the fluid cool down.

→ Wear personal protective gear.

Information

Only use the approved cleaning agent "Frostox R Spezial" (see PET).
Recommended mixture ratio for cleaning is 1:1 (cleaning agent/water).
Clean for about 10 minutes with the engine running (operating temperature), then drain the cleaning agent and flush with water.
Coolant hoses and sealing rings swell following long-term contact with engine oil (e.g. when oil and coolant are mixed), so perform visual inspections.
Always replace seals and O-rings in the cooling system following removal.
Open other required connection points on vehicles with auxiliary heating if necessary.
If further cleaning is required, repeat these steps.
Dispose of coolant additives, coolant and cleaning agents according to the respective, applicable national laws.

Completely drain coolant from the cooling system.
See specifications for the relevant vehicle model in the documents 193817 DRAINING AND FILLING COOLANT (INCLUDES BLEEDING) .
Have a sufficient quantity of cleaning agent/water mix with the mixture ratio 1:1 ready (depending on the vehicle).