52 13 055 Removing and installing/replacing lumbar support on front seat

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove REAR PANEL ON FRONT SEAT

Detach backrest cover (1) from backrest frame.

Fig 1: Removing Backrest Cover From Backrest Frame

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NOTE: Do not pop valve housing (1) out of backrest frame for this operation.

Carefully pull valve housing (1) forwards out of backrest frame.

Unlock quick connectors and detach air hoses from valve housing (1).

NOTE: Connections are coded against incorrect assembly.

Fig 2: Locating Valve Housing Quick Connectors

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Detach lumbar cushion (1) from spring wire.

Installation:

Attach lumbar cushion (1) to second and fourth wires from below.

Press backrest support forwards a little.

Pull out lumbar cushion (1) downwards.

Feed air hoses out of backrest frame and spring wire.

Fig 3: Pulling Out Lumbar Cushion

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Installation:

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

Air hoses (3) must not be kinked.

Fig 4: Identifying Lumbar Cushion (Top And Bottom)

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Installation:

Carry out FUNCTION CHECK .