52 15 055 Removing and installing/replacing lumbar cushion on front seat (coupe)

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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 (1 and 2) from valve housing (3).

NOTE: Connections are coded against incorrect assembly.

Fig 2: Identifying Air Hoses And Valve Housing

G04752982

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

Attach lumbar support (1) to third and fifth wires from below.

Unclip air hoses (3) and (4) from holder.

Fig 3: Identifying Lumbar Cushion, Spring Wire And Air Hoses

G04753021

Courtesy of BMW OF NORTH AMERICA, INC.

Press back support (1) a little.

Pull lumbar support (2) up and out.

Feed air hoses out of backrest frame and spring wire.

Fig 4: Identifying Back And Lumbar Supports

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. function check.