52 14 050 Replacing lumbar cushion on front left or right seat

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove REAR PANEL on rear seat backrest.

Remove valve housing in direction of arrow from backrest frame.

Installation:

Check that valve housing is correctly seated.

Fig 1: Removing Valve Housing From Backrest Frame

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Unlock quick connectors and detach air hoses (1).

Valve unit for lumbar support:

Hose (blue/red), lumbar cushion

Installation:

Connections are coded against incorrect installation.

Fig 2: Identifying Air Hoses

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Fig 3: Identifying Lumbar Cushion

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Disengage backrest cover at bottom and side left or right from backrest frame.

Detach lumbar cushion (1) from spring wire.

Installation:

Hook lumbar support cushion (1) over second and fourth wires.

Remove lumbar cushion (1) sideways between backrest frame and padding.

Installation:

Check lumbar cushion at top (1) and bottom (2) for damage.

Air hoses (3) must be laid without kinks.

Fig 4: Identifying Top And Bottom Lumbar Cushion And Air Hoses

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NOTE: Carry out FUNCTION TEST .