52 13 055 Removing and installing/replacing lumbar support on front seat

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks

Remove REAR PANEL ON FRONT SEAT

Detach backrest cover (1) from backrest frame.

Fig 1: Removing Backrest Cover From Backrest Frame

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Do not pop valve housing (1) out of backrest frame for this operation.

Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

NOTE: Connections are coded against incorrect assembly.

Fig 2: Identifying Valve Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Detach lumbar cushion (1) from spring wire.

Installation:

Attach lumbar cushion (1) to second and fourth wires from below.

Press backrest support forwards a little.

Pull out lumbar cushion (1) downwards.

Feed air hoses out of backrest frame and spring wire.

Fig 3: Pulling Out Lumbar Cushion

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 4: Identifying Lumbar Cushion At Top And Bottom With Air Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Carry out function check .