52 13 455 Replacing left or right heating elements for front seat (normal/manual)

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Necessary preliminary tasks:

Remove seat cover. See 52 13 402 Replacing seat cover for driver's seat (normal/manual) , 52 13 403 Replacing seat cover for front passenger seat (normal/manual) , 52 14 402 Replacing seat cover for driver's seat (normal/electric) or 52 14 403 Replacing seat cover for front passenger seat (normal/electrical) .

NOTE: Heating element is bonded to the foam section and cannot be separated from each other without incurring damage.
Foam section and heating mat must be replaced.

Check new foam part:

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

Check new heating mat:

No obvious damage or material defects
All tear-off film pieces present
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 edge.
Press down evenly in outwards direction

Fig 1: 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):

Fig 2: Sticks On Main And Bead Section (Seat Heating)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Check laying of heating mats:

Heating mats laid without folds
Heating mats correctly positioned
All bonding surfaces stuck on

NOTE: Carry out FUNCTION CHECK .