52 14 050 Replacing lumbar cushion on front left or right seat

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Necessary preliminary tasks:

Remove REAR PANEL on seat backrest

Remove valve housing in direction of arrow from backrest frame.

Installation:

Check that valve housing is correctly seated.

Fig 1: Removing Valve Body From Backrest Frame

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock quick connectors and detach air hoses (1).

Valve unit for lumbar support:

Hose (blue/red), lumbar cushion
Installation:

Connections are coded against incorrect installation.

Fig 2: Identifying Air Hoses
Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying Lumbar Cushion
Courtesy of BMW OF NORTH AMERICA, INC.

Disengage backrest cover at bottom and side left or right from backrest frame.

Detach lumbar cushion (1) from spring wire.

Installation:

Hook lumbar support cushion (1) over second and fourth wires.

Remove lumbar cushion (1) sideways between backrest frame and padding.

Installation:

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

Air hoses (3) must be laid without kinks.

Fig 4: Identifying Top, Bottom Lumbar Cushion And Air Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Carry out FUNCTION TEST .