WARNING: This page is about a different car, the 2011 Saab 9-3 and 2010 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Grounding Point G40
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Location:
In the instrument space to the left of the knee member