52 16 050 Removing and installing or replacing lumbar cushion on front seat

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Partially remove backrest cover

Disconnect plug connection (1) at drive unit.

Fig 1: Identifying Plug Connection

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Disconnect plug connection (1).

Fig 2: Identifying Plug Connection

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Lift fleece tabs of lumbar support cushion carrier from plastic clips (1).

Installation:

Hook lumbar support cushion over first and fourth wire.

Fig 3: Identifying Plastic Clips

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Detach lumbar cushion (2) from spring wire.

Unclip air cushion (1) for backrest width adjustment with carrier from backrest frame.

Installation:

Make sure the carrier for backrest width adjustment is fitted correctly on the backrest frame.

Fig 4: Identifying Lumbar Cushion And Air Cushion

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Fig 5: Identifying Air Cushion And Valve Housing

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Disconnect air hoses to remove corresponding components.

If tight, (carefully) heat up the parting points slightly.

Installation:

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

Lay air hoses (3) without kinks.

Fig 6: Identifying Lumbar Cushion Top And Bottom And Air Hoses

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Installation:

Carry out function check .