Remove the backrest cover with the upholstery for the front seat

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

• Before working on the airbag, disconnect the negative battery cable from the battery.
• Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
• For additional information see: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .

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: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .

• Detach the backrest cover (1) in this area (2).
• Detach the holder.

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• Unclip clips (1).
• Unlock plug connection (2) and disconnect.

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• Detach (1) the holder.
• Loosen nuts (2).

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• Unlock plug connection (1) and disconnect.

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• Clip in backrest covering in the marked areas in backrest frame.
• Removing the backrest cover with the upholstery for the comfort seat.
• Thread the backrest cover 1 in completely with the side airbag in direction of arrow.

Courtesy of BMW OF NORTH AMERICA, INC.