52 13 050 Replacing left or right lumbar supports on front seat (normal/manual)

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Remove backrest,

refer to 52 13 405 REPLACING BACKREST COVER FOR FRONT SEAT (NORMAL/MANUAL), LEFT OR RIGHT

Disconnect bottom of cover from clips (1).

Fig 1: Disconnecting Bottom Cover From Clips

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Installation

Fold down bottom of seat cover and insert clip.

Fig 2: Identifying Bottom Seat Cover

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Remove hose (1) (Blue = small cushion) and hose (2) (Red = large cushion) from control unit (3).

NOTE: If necessary, gently heat hose when firmly seated. Housing (valve block) must not be unclipped (leaks). Should be unclipped: unfasten screw and clip together the housing.

Installation

Connection hoses must be routed without sharp bends.

Fig 3: Removing Hose From Control Unit

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Disconnect top of lumbar support cushion (1) from spring wire (2). Press support (3) downwards and remove lumbar cushion (1).

Fig 4: Disconnecting Top Of Lumbar Support Cushion From Spring Wire

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Installation

Attach bottom left/right lumbar supports (1) with recesses (2) above the springs so that it is sealed with the spring mat (3) with the connection hoses routed without sharp bends.

Fig 5: Attaching Bottom Left/Right Lumbar Supports

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Installation

Check function.