52 14 127 Replacing the valve unit for right lumbar support

Necessary preliminary tasks: 

• Partially remove backrest cover. See BACKREST COVER FOR DRIVER'S SEAT  or BACKREST COVER FOR FRONT PASSENGER SEAT .

Remove valve body (2) from spring wire in direction of arrow.

Unfasten plug connection (1) and disconnect.

Installation note: 

Check that valve body is correctly seated.

Fig 1: Removing Valve Body From Spring Wire

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock quick connectors and detach air hoses (1) and (2).

Valve unit for lumbar support: 

1. Hose (clear) lumbar support pump
2. Hose (blue/red), lumbar support

Installation note: 

Connections are coded against incorrect assembly.

Connect plug connection (3).

Fig 2: Identifying Air Hoses And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.