Installing Backrest Frame

Information 

• The number of connectors and tie-wraps can vary, depending on seat equipment. 
• Plug in or out all connectors going to the backrest. 
• Cut and replace all tie-wraps used to secure the wire harness to the backrest. 

→ Always use new fastening screws and nuts following removal.

→ Observe specified tightening torques.

→ Carry out a visual inspection of all re-used parts.

Information 

Two people are needed in order to remove and install the backrest frame.

1. Fit backrest frame -2-  into the seat frame, position it correctly and secure with the fastening screws -1-  . Tightening torque 35 Nm (26 ftlb.) +/-4 Nm (+/-3 ftlb.) 
   Fig 1: Fitting Fastening Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Fit wire harness for rear backrest.
   1. 2.1. Guide the rear wire harness -1-  through between the backrest and seat surface in an upward direction -arrows-  .
      Fig 2: Guiding Rear Wire Harness Between Backrest And Seat Surface

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   2. 2.2. Fit holder -3-  for the wire harness for the side airbag -4-  along with the lines on the backrest frame.
   3. 2.3. Fit the retaining clips -1-  for the rear wire harness -2-  along with the lines on the backrest frame.

      Only for seats with lumbar support and/or Adaptive sports seats with air cushions in the side bolsters.

      Fig 3: Fitting Wire Harness For Rear Backrest

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Fit fastening nuts -1-  on the backrest frame -2-  .
   Fig 4: Identifying Backrest Frame Fastening Nuts

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4. Secure the pressure hose -2-  and lines -3-  to the lower part of the backrest frame using tie-wraps -1-  .
   Fig 5: Identifying Tie-Wraps

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5. Install inner spring on backrest frame.
   1. 5.1. Engage tension springs -1-  in the backrest frame.
   2. 5.2. Clip in inner spring -2-  on lower part of backrest frame at the drive shaft -A-  .
   3. 5.3. Engage tension springs -1-  in the inner spring -2-  on the backrest frame -B-  .
   Fig 6: Installing Inner Spring On Backrest Frame
   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Insert backrest side bolster support at the left -2-  and screw in and tighten fastening screws -1-  to the specified tightening torque. Tightening torque 7.5 Nm (5.5 ftlb.) +/-1 Nm (+/-0.5 ftlb.) 

   Only for seats without lumbar support and/or Adaptive sports seats with air cushions in the side bolsters.

   Fig 7: Identifying Left Backrest Side-Bolster Support Mounting Screw

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.