Boxster (986) F6-2.5L (1998)
1. Remove transverse member panel.
2. Unscrew ATF drain screw and drain ATF fluid.
3. Remove ATF pan (loosen screws crosswise).
4. Remove ATF filter.
5. Pull off securing clasp for wiring harness plug.
6. Pull off plugs for transmission speed sensors.
7. Unscrew fastening screws for hydraulic control unit.