52 25 049 Replacing Lumbar Cushion On Left Or Right Rear Seat

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Necessary Preliminary Tasks:

Remove rear seat. Refer to 52 24 005 REMOVING AND INSTALLING/REPLACING REAR SEAT (NORMAL) .
Remove rear panel on rear seat backrest. Refer to 52 25 ... REMOVING AND INSTALLING/REPLACING REAR PANEL ON REAR SEAT BACKREST .
Remove valve housing for lumbar support. Refer to 52 14 060 REMOVING AND INSTALLING/REPLACING VALVE HOUSING FOR LEFT OR RIGHT FRONT LUMBAR SUPPORT (NORMAL/ELECTRIC) and 52 17 060 REMOVING AND INSTALLING/REPLACING VALVE HOUSING FOR LUMBAR CUSHION (COMFORT) .

Fig 1: Air Hoses, Spring Wire, Lumbar Cushion And Removal Directions
Courtesy of BMW OF NORTH AMERICA, INC.

Detach backrest cover at bottom from backrest frame.

Remove air hoses (1) from backrest frame.

Disconnect air hoses (1) 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.

Detach lumbar cushion (3) from spring wire (2).

Remove lumbar cushion (3) towards bottom.

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.