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

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Necessary preliminary tasks:

Remove Seat Cover

NOTE: Heating element is bonded to the foam section and cannot be separated from each other without incurring damaging.

Foam section and heating mat 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 Main Section And Bead Section
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 Main Section 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.