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

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. 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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Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Fig 2: Identifying Plug Connection

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Courtesy of BMW OF NORTH AMERICA, INC.

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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Courtesy of BMW OF NORTH AMERICA, INC.

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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Courtesy of BMW OF NORTH AMERICA, INC.

Fig 5: Identifying Air Cushion And Valve Housing

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Courtesy of BMW OF NORTH AMERICA, INC.

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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Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Carry out FUNCTION CHECK .