52 13 455 Replacing heating elements for left or right front seat (basic)

Necessary preliminary tasks: 

• Remove seat and backrest covers. See REPLACING SEAT COVER ON FRONT SEAT  and REPLACING BACKREST COVER FOR FRONT SEAT .

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 Sticks On Main And Bead Section (Backrest Heating)

Courtesy of BMW OF NORTH AMERICA, INC.

Guide cable for seat 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 2: Identifying Sticks On Main And Bead Section (Seat Heating)

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