52 17 050 Replacing lumbar support cushion on left or right front seat (comfort)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.

Remove back-rest,

refer to 52 17 405 REPLACING BACK-REST COVER FOR FRONT SEAT (COMFORT) ON LEFT OR RIGHT SIDES

Remove bottom of cover from claw-type cover clips.

Fig 1: Removing Claw-Type Cover Clips

Courtesy of BMW OF NORTH AMERICA, INC.

Remove hose (1) (red - large cushion) and hose (2) (blue - small cushion) from control unit (3).

NOTE: If seat fixed in position, slightly heat hose, housing (valve block) must not be unclipped (leaks). If it is unclipped, release screws and clip together housing.

Fig 2: Removing Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect top of lumbar support cushion (1) from spring wire (2). Press support (3) downwards and remove lumbar support cushion.

Fig 3: Removing Lumbar Support Cushion

Courtesy of BMW OF NORTH AMERICA, INC.

Installation

Attach lumbar support cushion (1) at bottom left/ right with recesses (2) above the spring.

Fig 4: Attaching Lumbar Support Cushion (1) At Bottom Left/Right With Recesses (2) Above The Spring

Courtesy of BMW OF NORTH AMERICA, INC.