S90 L6-2.9L VIN 96 B6304S (1998)
Power Seat Control Module: Service Precautions
When replacing the control module with a new module always check that the new control module has P/N 9174902 (left seat) or 9174903 (right seat).
The earlier type of control module has a different type of diagnostics. The older versions operate correctly with the different seat functions, but their
diagnostic system cannot communicate with the Volvo Scan Tool (ST).
