52 25 059 Removing and installing/replacing valve housing for lumbar cushion

WARNING: This page is about a different car, the 2005 BMW 745i, 2004 BMW 745i, 2003 BMW 745i, and 2002 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove rear seat. Refer to 52 25 010 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT REAR SEAT .

Fig 1: Removing Valve Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Installation:

Install valve housing (2):

Left seat - outer retaining point
Right seat - inner retaining point

Disconnect plug connection (3).

Disconnect air hoses (4) and (5) 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.

Installation:

Make sure air hoses (5) are correctly connected to valve block (color coding).

Air hoses must be laid without kinks.

Install valve housing (2).