WARNING: This page is about a different car, the 2007 Saab 9-5 and 2006 Saab 9-5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Illustration For Step 2
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Raise the car and remove the cover.
Unscrew the plug and extract the spring and reducing valve.