52 14 050 Removing And Installing/Replacing Lumbar Cushion On Front Seat

Necessary preliminary tasks: 

• Remove rear panel on front seat  . Refer to 52 13 198 Removing And Installing/Replacing Rear Panel On Left Or Right Front Seat Backrest .

Detach backrest cover (1) from backrest frame.

Fig 1: Identifying Backrest Cover

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Unlock quick connector and detach air hoses - blue (1) and red (2) - from valve housing (3).

If necessary, remove valve housing  . Refer to 52 14 060 Removing And Installing Or Replacing Valve Housing For Lumbar Cushion .

Fig 2: Identifying Air Hoses Blue & Red

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Detach lumbar cushion (1) from spring wire (2).

Installation: 

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

Unclip air hoses (3) from holder.

Fig 3: Identifying Lumbar Cushion & Spring Wire

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Press back padding (1) a little.

Pull out lumbar cushion (2) towards top.

Feed air hoses out of backrest frame and spring wire.

Fig 4: Identifying Padding & 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 5: Checking Lumbar Cushion At Top & Bottom For Damage

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Installation: 

Carry out function check  . Refer to 52 14... Performing Function Check With Adapter Cable (For Seat Repairs) .