Replacing the foam cushion for the seat surface of front seat

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.

Preliminary work

Refer to REMOVING DRIVER'S SEAT .
Refer to REMOVING OUTER COVER ON FRONT SEAT .
Refer to REMOVING INNER COVER FROM THE FRONT SEAT .
Refer to REMOVING THE OUTER SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to REMOVING THE INNER SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to REMOVING THE FRONT SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to REMOVING THE SEAT COVER WITH THE CUSHION (M CFRP BUCKET SEAT) .
Refer to REMOVING THE SEAT COVER (M CFRP BUCKET SEAT) .

NOTE: TECHNICAL INFORMATION
Only US/Canadian version of front passenger seat with seat occupancy mat (CIS):
The seat occupancy mat is bonded to the entire surface of the upholstery and can only be replaced together with the upholstery.
If the seat occupancy mat or cushion is defective, both parts must always be replaced together.
Full operability can only be guaranteed with Original BMW replacement parts.
After installing the seat cover, enable the seat occupancy mat using the BMW programming system via the appropriate service function.

NOTE: TECHNICAL INFORMATION
The heating mat is glued to the foam pad and cannot be dismantled nondestructively.
When replacing the heating mat, a new one must always be installed with a new foam pad.

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

Removing the fan for the seat surface on the front seat

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

Unlock and disconnect plug connections (1).

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For a better overview the removed condition is shown here.
Push the heating mat (1) and the climate control mat (2) to the side.
Unclip the fan (3).

Courtesy of BMW OF NORTH AMERICA, INC.
Replace the foam seat, heating mat and, if necessary, climate-control mat.
Parts: Foam seat, heating mat and, if necessary, climate-control mat

The components are bonded together and cannot be disassembled without destroying them.
Equipment specification with seat air conditioning
Clip in the disassembled fan (1) into the new foam seat (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Replacing the sensor mat for the seat occupancy detection of the (front) passenger seat

NOTE: TECHNICAL INFORMATION
EU/China/Japan version with attached seat occupancy mat only
The seat occupancy mat is glued to the foam pad and cannot be dismantled non-destructively.
When replacing the seat occupancy mat, a new one must always be installed with a new foam pad.
Replace the seat occupancy mat (1).
Parts: Seat occupancy mat
Position the seat occupancy mat (1) on the foam cushion (2) and align it.
Bond the seat occupancy mat (1).

Courtesy of BMW OF NORTH AMERICA, INC.
Equipment specification with seat air conditioning
If necessary, trim the climate-control mat (1) to fit the foam pad (2).

Secure the climate-control mat (1) to the hook and loop tape (3).

Courtesy of BMW OF NORTH AMERICA, INC.
Equipment specification with seat heating
Position the heating mats (1) on the new foam seat and align them.

Bond the heating mats (1) with the foam seat in the areas (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Equipment specification with seat air conditioning
Connect connectors (1) and lock.

Feed the wiring harness into the foam seat.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING THE SEAT COVER (M CFRP BUCKET SEAT) .
Refer to INSTALLING THE SEAT COVER WITH CUSHION (M CFRP BUCKET SEAT) .
Refer to INSTALLING THE FRONT SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to INSTALLING THE INNER SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to INSTALLING THE OUTER SEAT TRIM (M CFRP BUCKET SEAT) .
Refer to INSTALLING THE INNER COVER ON THE FRONT SEAT .
Refer to INSTALLING OUTER COVER ON FRONT SEAT .
Refer to INSTALLING DRIVER'S SEAT .