52 14 050 Replacing lumbar cushion on front left or right seat

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Special tools required:

52 0 050 . See SEATS - SPECIAL TOOLS .
64 1 020 . See HEATING AND AIR CONDITIONING - SPECIAL TOOLS .

Necessary preliminary tasks:

Remove rear panel on front seat

Detach tensioning cables (1) from backrest frame.

Disconnect all retainers.

Detach partial cover (2) from backrest frame.

Installation:

Lock new retainers by bending with special tool 52 0 050 . See SEATS - SPECIAL TOOLS .

Fig 1: Identifying Tensioning Cables And Partial Cover

G04761210

Courtesy of BMW OF NORTH AMERICA, INC.

Detach drive unit (1) for lumbar cushion from backrest frame.

Installation:

If necessary, use new adhesive tape (double-sided).

Detach backrest cover (2) from backrest frame by lifting out piping.

NOTE: If necessary, use special tool 64 1 020 . See HEATING AND AIR CONDITIONING - SPECIAL TOOLS .

Fig 2: Detaching Backrest Cover

G04761250

Courtesy of BMW OF NORTH AMERICA, INC.

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

Disconnect hoses (2) and (3) from valve housing (1).

2 Hose (blue) top cushion
3 Hose (red) bottom cushion

Installation:

Air hoses (2) and (3) must be laid without kinks.

Fig 3: Identifying Valve Housing And Hoses

G04761251

Courtesy of BMW OF NORTH AMERICA, INC.

Detach lumbar cushion (1) from spring wire (2).

Version with seat heating:

Slide cable (3) for seat heating to one side.

Fig 4: Identifying Lumbar Cushion And Spring Wire

G04761252

Courtesy of BMW OF NORTH AMERICA, INC.

Press back support (1) a little.

Turn lumbar cushion (2) and pull out downwards.

Fig 5: Turning Lumbar Cushion

G04761253

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must not be kinked.

Fig 6: Identifying Air Hoses

G04752985

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Attach lumbar cushion (1) to third wire (2) above spring (3).

Fig 7: Identifying Lumbar Cushion

G04761255

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

Pay attention to seat heating cable guide (1).

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

Fig 8: Identifying Seat Heating Cable Guide And Air Hoses

G04761213

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check function.