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

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. 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

G04752981

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Connections are coded against incorrect assembly.

If necessary, remove Valve Housing .

Fig 2: Identifying Valve Housing, Blue And Red Air Hoses

G04752982

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

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

Unclip air hoses (3) from holder.

Fig 3: Identifying Lumbar Support From Spring Wire

G04752983

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 And Lumbar Cushion

G04752984

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Air hoses (3) must not be kinked.

Fig 5: Identifying Air Hoses, Top And Bottom Lumbar Support

G04752985

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Carry out Function Check.