52 15 059 Removing and installing/replacing lumbar support pump with valve body for lumbar support/backrest width adjustment

Necessary preliminary tasks: 

• Remove the REAR PANEL 

Cut open cable straps (arrows).

Installation note: 

Replace defective cable straps.

Remove lumbar support pump (1) from backrest frame.

Unfasten plug connection (2) and disconnect.

Unclip air hose from holder (3).

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Unclip valve body (1) from seat mechanism and feed out from backrest frame.

Installation note: 

Check the valve body (1) for correct fit in the backrest frame and spring wire.

Air hoses must not be kinked.

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Unfasten plug connection (2) and disconnect.

Unlock quick connectors and detach air hoses (1).

Valve body for backrest width adjustment: 

1. Lumbar support left/right = hose clear, quick connector white

Installation note: 

Connections are coded against incorrect assembly.

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