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

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

52 0 050

Necessary preliminary tasks:

Remove REAR PANEL on front seat backrest

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Remove valve body. See NORMAL/ELECTRIC SEAT , COMFORT SEAT , or NORMAL/SEMI-ELECTRIC SEAT .

Disconnect air hoses (2) from valve body.

NOTE: Heat air hoses gently if they are firmly seated on valve body.

Housing of valve block must not be unclipped (leakage). If necessary, release mount and clip housing together.

If necessary, cut all clamps on lumbar support (3) and spring wire.

NOTE: Remove all remnants of clamps. Bend new clamps to shape with special tool 52 0 050 .

Detach lumbar support (3) from spring wire.

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

Installation note:

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

Air hoses must be laid without kinks.

Check lumbar support for damage.