52 15 055 Removing And Installing Or Replacing Lumbar Cushion On Front Seat

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove rear panel on front seat . Refer to 52 13 198 Removing And Installing/Replacing Rear Panel On Left Or Right Front Seat Backrest .

Detach backrest cover (1) from backrest frame.

Fig 1: Identifying Backrest Cover

G04727100

Courtesy 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

G04727101

Courtesy 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

G04727102

Courtesy 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

G04727103

Courtesy 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

G04727104

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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