52 25 048 Removing and installing/replacing pump for lumbar and massage

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Partially remove BACKREST FOR LEFT OR RIGHT REAR SEAT .
Release backrest only and move forwards

Release screws (1).

Fig 1: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Pull off air hose (2).

NOTE: Gently heat the air hoses if too tightly seated on the valve block.

Open quick connectors and detach air hoses (3) and (4).

(2) Air hose (blue), outlet to valve block for massage

(3) Air hose (grey), outlet to valve block for lumbar

(4) Air hose (grey), access from valve block for massage

Fig 2: Identifying Air Hose And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.