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

WARNING: This page is about a different car, the 2008 BMW M3. 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: Detaching Backrest Cover From Backrest Frame

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: Detaching Air Hoses From Valve Housing

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: Detaching Lumbar Cushion From Spring Wire

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: 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 5: Identifying Air Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Carry out function check .