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

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Necessary preliminary tasks:

Remove backrest cover from front seat-backrest. See 52 14 407 REPLACING BACKREST COVER FOR DRIVER'S SEAT (NORMAL/ELECTRIC) , 52 14 408 REPLACING BACKREST COVER FOR FRONT PASSENGER SEAT (NORMAL/ELECTRICAL) , 52 16 407 REPLACING BACKREST COVER (SPORT) FOR DRIVER'S SEAT or 52 16 408 REPLACING BACKREST COVER (SPORT) FOR FRONT PASSENGER SEAT .

Unlock quick connectors and detach air hoses (1).

Valve unit for lumbar support:

Hose (blue/red), lumbar support

Installation note:

Connections are coded against incorrect assembly.

Fig 1: Identifying Air Hoses

G06895281

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Detaching Lumbar Support Upward From Spring Wire

G10047155

Courtesy of BMW OF NORTH AMERICA, INC.

Detach lumbar support (1) upward from spring wire.

Installation note:

Attach lumbar support cushion (1) over first and fifth wires.

Installation note:

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

Air hoses (3) must be laid without kinks.

Fig 3: Identifying Lumbar Cushion (Top And Bottom)

G09851363

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Carry out FUNCTION CHECK .