52 15 455 Replacing heating elements for left or right front seat (sport / manual)

Necessary preliminary tasks: 

• Remove Seat Fabric 
• Remove Backrest Cover 
• Remove Thigh Support Cover 

Check new foam section: 

• No obvious damage or material defects
• All trim wires present in foam
• No bubbles in foam section
• No dirt/contamination on foam or residual foam
• Pay attention to foam section on left and right

Check new heating mat: 

• No obvious damage or material defects
• All tear-off film pieces presents
• Note variant by examining label on cable

Guide cable for backrest heating through foam hole.

Stick on main section (1): 

• Pull adhesive film pieces off main section (1) and stick to upper edge of main section foam until flush

Stick on bead section (2): 

• Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
• Press down evenly in outwards direction
  Fig 1: Identifying Backrest Heating Main Section And Bead Section

  Courtesy of BMW OF NORTH AMERICA, INC.

Guide cable for seat heating through foam hole.

Stick on STV heating mat (1): 

• Pull off adhesive film and stick to rear foam edge until flush

Stick on bead section (2): 

• Pull adhesive film pieces off bead section (2) and stick on heating mat along bead section edges.
• Press down evenly in outwards direction

Stick on main section (3): 

• Pull adhesive film pieces off main section (3) and stick to upper edge of main section foam until flush
  Fig 2: Identifying Seat Heating Main Section, STV Heating Mat And Bead Section

  Courtesy of BMW OF NORTH AMERICA, INC.

Check laying of heating mats: 

• Heating mats laid without folds
• Heating mats correctly positioned
• All bonding surfaces stuck on
  NOTE: Carry out Function Test