52 14 127 Replacing the valve unit for right lumbar support

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2018 BMW M6, 2018 BMW 650i xDrive, 2018 BMW 650i, 2018 BMW 640i xDrive, and 2018 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Partially remove backrest cover. 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 .

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:

Hose (clear) lumbar support pump
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.

NOTE: Carry out FUNCTION CHECK .