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

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: Identifying Backrest Cover

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

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: 

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

Fig 3: Identifying Air Hoses & Valve Housing

Courtesy of BMW OF NORTH AMERICA, INC.