Removing Backrest Frame

Release two electric plug connections under the seat -arrows a- and disconnect them -arrows A- .

Fig 1: Disconnecting Wire Harness For Backrest
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Pull out fixing clip -1- and detach cover for rear seat surface -2- (-arrow A- ).

Fig 2: Loosening Cover For Rear Seat
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Unscrew fastening screws -3- , pull bracket -4- down -arrow B out of the catches and detach cover on seat frame.

Fig 3: Loosening Bracket At Sides
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

A second mechanic is required:
First mechanic: Unscrew two fastening screws -1- from the backrest frame on both sides.

Fig 4: Identifying Backrest Frame Screws
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Second mechanic: Pull electric lines through between the seat frame and seat padding.