Removing and Installing/Replacing Valve Housing For Lumbar Cushion

52 16 058 - Removing and installing or replacing valve housing for lumbar cushion





Necessary preliminary tasks:
- Remove rear panel on front seat Removing and Installing/Replacing Rear Panel on Left or Right Front Seat Backrest





Detach backrest cover (1) from backrest frame.





Remove valve housing (2) for lumbar support in direction of arrow from backrest frame.

Installation:
Check valve housing for correct seating in backrest frame.





Unfasten plug connection (1) and disconnect.
Unlock quick connector and detach air hoses (3) and (4 and 5) from valve housing (2).
Valve unit for lumbar support:
(3) - Hose (clear), lumbar drive
(4) - Hose (blue), top lumbar cushion
(5) - Hose (red), bottom lumbar cushion

Note:
Connections are coded against incorrect assembly.





Note:
Carry out function test Front Seat - Normal / Electric