Preliminary Work
WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
Cayenne V8:
Partly remove wheel housing liner. → Removing front wheel housing liner
Remove ignition key.
Cayenne V8 Turbo:
Remove front apron. → Removing front apron