Preliminary Work
- Disconnect the battery. → CONNECTING AND DISCONNECTING BATTERY
- Detach cover for front middle backrest from the catch at the side and top. → Removing Cover For Front Middle Backrest With Active Seat Ventilation .
- For seats with an air cushion in the backrest: Remove air cushion control valve.72 - SEAT FRAMES -- (981) BOXSTER/CAYMAN
- For seats with lumbar support: Remove control valve for lumbar support adjustment.