52 17 062 Removing and installing/replacing front left or right lumbar support with valve housing (active seat)

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Necessary preliminary tasks:

Remove REAR PANEL on front seat backrest
Partially remove backrest cover. See DRIVER'S SEAT or PASSENGER SEAT .

Unfasten plug connection (1) and disconnect.

Detach valve housing from pinetree clips.

Fig 1: Detaching Valve Housing From Pinetree Clips

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Removing Lumbar Cushion

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect quick connector (1) and feed air hose out of fleece mat.

Pop out upper fleece tabs and disengage from spring wire.

Pop out lower fleece mat.

Unlock and disconnect quick connector (2).

Remove lumbar cushion with valve housing downwards between backrest frame and backrest padding.

Overview of lumbar support with valve housing:

Fig 3: Identifying Lumbar Support Spring Wire

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check lumbar cushion for damage.

Make sure lumbar support is correctly fitted on fourth spring wire from below.

Air hoses must not be kinked.

Make sure valve housing is correctly seated.

NOTE: Carry out FUNCTION TEST .