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Home >> BMW >> 2009 >> M3 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 81 (Seats - Repair - E90) >> Front Seat, Sports, Electric >> 52 14 050 Removing and installing or replacing lumbar cushion on front seat

52 14 050 Removing and installing or replacing lumbar cushion on front seat

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks 

Detach backrest cover (1) from backrest frame.

Fig 1: Removing Backrest Cover From Backrest Frame
G04727100Courtesy of BMW OF NORTH AMERICA, INC.

Unlock quick connector and detach air hoses (1 and 2) from valve housing (3).

NOTE: Connections are coded against incorrect assembly.
Fig 2: Identifying Air Hoses And Valve Housing
G04727101Courtesy of BMW OF NORTH AMERICA, INC.

Detach lumbar cushion (1) from spring wire (2).

Installation: 

Attach lumbar cushion (1) to third and fifth wires from below.

Unclip air hoses (3) and (4) from holder.

Fig 3: Locating Lumbar Cushion On Spring Wire And Air Hoses
G04727102Courtesy of BMW OF NORTH AMERICA, INC.

Press back support (1) a little.

Pull out lumbar cushion (2) towards top.

Feed air hoses out of backrest frame and spring wire.

Fig 4: Pulling Lumbar Cushion
G04727103Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must not be kinked.

Fig 5: Identifying Lumbar Cushion And Bottom Area And Air Hoses
G04727104Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Carry out FUNCTION CHECK  .