52 13 060 Removing And Installing / Replacing Valve Housing For Left Or Right Lumbar Support, Front (Normal / Manual)

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Carry out following tasks beforehand:

Remove rear panel on front seat backrest. Refer to 52 13 198 REMOVING AND INSTALLING / REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/MANUAL) .

Detach backrest cover (1) from backrest frame (2).

Fig 1: Detaching Backrest Cover From Backrest Frame

G03119294

Courtesy of BMW OF NORTH AMERICA, INC.

Version with lumbar support and backrest width adjustment only:

Detach hoses (1) and (2) at cutting line (heat with hot air blower if necessary).

Fig 2: Detaching Hoses At Cutting Line

G03119295

Courtesy of BMW OF NORTH AMERICA, INC.

Hose (blue) upper cushion (lumbar support)
Hose (red) lower cushion (lumbar support)
Hose (white) right cushion (backrest width adjustment)
Hose (white) left cushion (backrest width adjustment)
Motor pump unit (drive unit)

Remove drive unit. Refer to 67 66 010 REMOVING AND INSTALLING/REPLACING LUMBAR SUPPORT DRIVE MECHANISM ON FRONT SEAT, LEFT OR RIGHT , 67 66 013 REMOVING AND INSTALLING / REPLACING DRIVE UNIT FOR LUMBAR SUPPORT ON LEFT OR RIGHT FRONT SEAT (SPORTS SEAT) or 67 66 013 REMOVING AND INSTALLING / REPLACING DRIVE UNIT FOR LUMBAR SUPPORT ON LEFT OR RIGHT FRONT SEAT (M3 COUPE) .

Unfasten plug connection (1).

Fig 3: Disconnecting Hoses From Valve Housing

G03119296

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If necessary, gently heat air hose when firmly seated.

Disconnect hoses (3) ... (5) from valve housing (2).

3 Hose (blue) top cushion

4 Hose (red) bottom cushion

5 Hose (transparent), lumbar support pump (on housing black)

NOTE: For purposes of clarity, shown here without valve housing.

Installation:

Observe cable guide (1) for backrest heating.

Fig 4: Identifying Air Hoses

G03119297

Courtesy of BMW OF NORTH AMERICA, INC.

Lay air hoses (2) without kinks through hole (3).

Slacken screw (1) from inside.

Detach valve housing (3) from metal nut (2).

Fig 5: Detaching Valve Housing From Metal Nut

G03119298

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Housing parts (1) ... (4) must not be unclipped (leakage).

Fig 6: Identifying Housing Parts

G03119299

Courtesy of BMW OF NORTH AMERICA, INC.

If housing is unclipped, clip valve housing together.

Check function.