Diagnostic help
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The control module output can be activated using the diagnostic tool.
If the seat can be operated in one or more directions, the fault probably lies in the switch (357P), motors or wiring harness.
If the seat cannot be operated, the fault probably lies in the relay (446), switch (357P) or wiring harness. Also check fuse 11.