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.
Remove cylinder head cover.
1.1. Unscrew oil cap.
1.2. Unscrew all fastening screws -3-
.
1.3. Lift off cylinder head cover (valve cover) and set it down on a clean surface.
Fig 1: Identifying Cylinder Head Cover, Oil Cap And Screws