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

WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.

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: Installing Bottom Of Seat Cover

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

Fig 3: Removing Hoses From Control Unit

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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.

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

Fig 4: Removing Lumbar Support Cushion

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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: Installing Lumbar Supports

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Installation:

Check function.