67 66 510 Removing and installing/replacing lumbar support drive mechanism on front seat, left or right

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

Adjust front seat to maximum upper setting.

Version with plastic holder:

Detach hose on drive unit for lumbar support and disconnect plug connection.

NOTE: Grip hose connection on drive unit for lumbar support with pointed pliers (risk of damage to drive unit for lumbar support).

Fig 1: Detaching Hose On Drive Unit For Lumbar Support

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable ties (1). Unlock catch (2). Turn drive unit for lumbar support (3) downwards and detach towards rear.

Fig 2: Unlocking Catch

Courtesy of BMW OF NORTH AMERICA, INC.

Version with bag:

Remove rear panel on front seat backrest. See 52 13 198 REMOVING AND INSTALLING / REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/MANUAL)

Release cable ties (1) on drive unit for lumbar support (2) and pull forward a little.

Fig 3: Releasing Cable Ties On Drive Unit For Lumbar Support

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable ties (1).

Detach hose (2) and disconnect plug connection (3).

Pull out drive unit for lumbar support with hose and cable underneath seat.

Fig 4: Disconnecting Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.