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Home >> BMW >> 2009 >> 135i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Seats - Repair (E82)) >> Front Seat, Sports, Manual >> 52 15 055 Removing And Installing Or Replacing Lumbar Cushion On Front Seat

52 15 055 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: Identifying Backrest Cover
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
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: Identifying Lumbar Cushion & Spring Wire
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: Identifying Back Support & 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: Checking Lumbar Cushion At Top & Bottom For Damage
G04727104Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Carry out function check  . Refer to 52 14... Performing Function Check With Adapter Cable (For Seat Repairs) .