When replacing the backrest frame: Remount components

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Removing backrest width adjustment with valve (M CFRP bucket seat)

Carefully release all the marked attachment points of the backrest width adjustment (1) .
Unlock plug connections (2) and disconnect.
Release the yellow-marked cables and lines from the backrest frame carefully .
Remove the backrest width adjustment with valve (1) .

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Removing the cushion support (M CFRP bucket seat)

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components.
Scratches, surface damage.

Protect working area.
Handle tools and components carefully.

NOTE: Description is for left component only. Procedure on the right side is identical.

Release the screws (1) on the cushion support (2) .

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Unclip the cushion support (1) from the detents of the support tube (2) in the arrow direction carefully and remove.

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Removing the side airbag (M CFRP bucket seat)

WARNING: Pyrotechnic components.
Danger! Immobilization period-threatening injuries!

All work on pyrotechnic parts may be carried out by technically experienced and appropriately trained personnel only.
Replace any damaged part or ones that have been dropped.
For additional information see: 72 00 SAFETY REGULATIONS ON HANDLING COMPONENTS WITH GAS GENERATORS .

WARNING: Airbag unit.
Danger! Immobilization period-threatening injuries!

Before performing any work on the airbag, always disconnect the battery ground lead from the battery.
Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
For additional information see: 72 00... SAFETY REGULATIONS ON HANDLING AIRBAG SYSTEM COMPONENTS/GAS GENERATORS .

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components.
Scratches, surface damage.

Protect working area.
Handle tools and components carefully.

Release nuts (1) .
Remove the side airbag (2) from the backrest frame (3) .
Unlock the plug connection of the side airbag (1) and disconnect.

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Remounting small parts

NOTE: TECHNICAL INFORMATION
Different variants may be installed depending on the vehicle equipment.

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

NOTE: During a replacement, remount all installed parts and/or replace as necessary.

Remount all installed parts of the seat frame/backrest frame that are not included among the new parts.

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Installing the side airbag (M CFRP bucket seat)

WARNING: Pyrotechnic components.
Danger! Immobilization period-threatening injuries!

All work on pyrotechnic parts may be carried out by technically experienced and appropriately trained personnel only.
Replace any damaged part or ones that have been dropped.
For additional information see: 72 00 SAFETY REGULATIONS ON HANDLING COMPONENTS WITH GAS GENERATORS .

WARNING: Airbag unit.
Danger! Immobilization period-threatening injuries!

Before performing any work on the airbag, always disconnect the battery ground lead from the battery.
Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
For additional information see: 72 00 SAFETY REGULATIONS ON HANDLING COMPONENTS WITH GAS GENERATORS .

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components.
Scratches, surface damage.

Protect working area.
Handle tools and components carefully.

Position the side airbag (2) in the backrest frame (3) correctly.
Connect the connector of the side airbag (1) and lock.
Tighten nuts (1) .

TIGHTENING TORQUES SPECIFICATION

Airbag on the backrest frame
Nut Replace nut.	tightening torque	6.5 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Installing the cushion support (M CFRP bucket seat)

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components.
Scratches, surface damage.

Protect working area.
Handle tools and components carefully.

NOTE: Description is for left component only. Procedure on the right side is identical.

Carefully clip the seat cushion support (1) into the detents of the support tube (2) in the arrow direction.

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Tighten the screws (1) on the cushion support (2) .

TIGHTENING TORQUES SPECIFICATION

Upholstered support to the backrest frame
Oval-head screw with collar	Tightening torque	6.5 Nm

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Install backrest width adjustment with valve (M CFRP bucket seat)

Position the backrest width adjustment (1) with the valve as depicted.
Position cables and lines marked in yellow in the backrest frames as depicted.
Clip in all marked attachment points of the backrest width adjustment (1) .
Connect connectors (2) and lock.

Courtesy of BMW OF NORTH AMERICA, INC.