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.
Fig 1: Identifying Bottom Front Of Vehicle (1 Of 2)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Fig 2: Identifying Bottom Front Of Vehicle (2 Of 2)