WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Cruise Control Cable
Courtesy of SUBARU OF AMERICA, INC.
Check the cruise control cable installation. If NG, install the cable securely.