52 15 455 Replacing heating elements for left or right front seat (Sport)

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Necessary preliminary tasks

NOTE: Heating elements are bonded with a foam section and cannot be separated from each other without causing damage.
Foam section and heating elements must be replaced.

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

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 Sticks On STV Heating Mat, Main 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 check