Section 6 (Mechanism & Function -- Speed Control System (H4SO))
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 Subaru Outback, 2009 Subaru Legacy, 2009 Subaru Impreza, 2009 Subaru Forester, and 2008 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.