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

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Special tools required:

52 0 050 , see 52 0 050 PLIERS .

Necessary preliminary tasks:

Remove rear panel on front seat backrest, see 52 14 198 Removing and installing or replacing rear panel on left or right front seat backrest .

Fig 1: Identifying Lumbar Cushion, Air Hoses And Backrest Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Detach backrest cover (1) at bottom from backrest frame.

Remove valve housing , see 52 14 060 Removing and installing/replacing valve housing for left or right front lumbar support (normal/electric) .

Disconnect air hoses (2) from valve housing.

NOTE: Heat air hoses gently if they are firmly seated on valve housing.
Housing of valve block must not be unclipped (leakage). If necessary, release mounting and clip housing together.

If necessary, cut all retainers on lumbar cushion (3) and spring wire.

NOTE: Remove all remnants of retainers. Lock new retainers by bending with special tool 52 0 050 .

Detach lumbar cushion (3) from spring wire.

Remove lumbar cushion (3) downwards between backrest frame and seat mechanism.

Installation:

Make sure air hoses are correctly connected to valve block (color coding).

Air hoses must be laid without kinks.

Check lumbar cushion for damage.