52 14 060 Removing And Installing Or Replacing Valve Housing For Lumbar Cushion

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove rear panel on front seat . Refer to 52 13 198 Removing And Installing/Replacing Rear Panel On Left Or Right Front Seat Backrest .

Detach backrest cover (1) from backrest frame.

Fig 1: Detaching Backrest Cover From Backrest Frame

G04727100

Courtesy of BMW OF NORTH AMERICA, INC.

Remove valve housing (2) for lumbar support in direction of arrow from backrest frame.

Installation:

Check valve housing for correct seating in backrest frame.

Fig 2: Identifying Valve Housing For Lumbar Support In Direction

G04727106

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Unlock quick connector and detach air hoses (3) and (4 and 5) from valve housing (2).

Valve unit for lumbar support:

(3) Hose (clear), lumbar drive
(4) Hose (blue), top lumbar cushion
(5) Hose (red), bottom lumbar cushion

NOTE: Connections are coded against incorrect assembly.

NOTE: Carry out function test . Refer to 52 14... Performing Function Check With Adapter Cable (For Seat Repairs) .

Fig 3: Identifying Plug Connection, Air Hoses & Valve Housing

G04727107

Courtesy of BMW OF NORTH AMERICA, INC.