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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 289 (Seats - Repair) >> Front Seat, Sports, Electric >> 52 16 055 Replacing an air cushion for backrest width adjustment left or right

52 16 055 Replacing an air cushion for backrest width adjustment left or right

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Necessary preliminary tasks: 

Detach backrest cover (1) from backrest frame.

Fig 1: Detaching Backrest Cover
G09851345Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Removal operation is shown on left side, right analogous to that.
The air cushion must be deflated completely.

Disconnect spring (1).

Lift out clips with plastic wedge.

Feed out air cushion (2) between spring wire and backrest frame.

Installation note: 

Insert the air cushion without kinks.

Check air cushion for damage.

Fig 2: Checking Air Cushion For Damage
G09851474Courtesy of BMW OF NORTH AMERICA, INC.

Unlock quick connectors and detach air hoses (1 and 2) from valve body (3).

If necessary, remove VALVE HOUSING .

Installation note: 

Connections are coded against incorrect assembly.

Air hoses must not be kinked.

Fig 3: Identifying Air Hoses And Valve Body
G09851475Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Carry out FUNCTION CHECK