Remove/install lumbar support air cushion of front seat backrest - AR91.25-P-1445CY

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MODEL 204.0/2 with CODE 242 (Front passenger seat, electrically adjustable with memory function) with CODE 275 (Memory package) except CODE 409 (Left/right front multicontour seat)

MODEL 204.9 with CODE 242 (Front passenger seat, electrically adjustable with memory function) with CODE 275 (Memory package)

MODEL 212, 218 with CODE 275 (Memory package)

MODEL 463.202/236/237 up to model year 2013 except CODE SM7 (Left front multicontour seat) except CODE SM8 (Front passenger multicontour seat) as of model year 2010, /model refinement package 2012

MODEL 463.222/270/271/303/340/341 except CODE SM7 (Left front multicontour seat) except CODE SM8 (Front passenger multicontour seat) As of model year 2010

MODEL 463.306/336 except CODE SM7 (Left front multicontour seat) except CODE SM8 (Front passenger multicontour seat)

MODEL 463.346 up to model year 2013 except CODE SM7 (Left front multicontour seat) except CODE SM8 (Front passenger multicontour seat) /FACELIFT 2012

Shown on model 204.981, with removed front seat with code (864) Rear entertainment system

Fig 1: Lumbar Support Air Cushion Of Front Seat Backrest Remove/Install Components - Shown On Model 204.981 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Shown on model 204.981, with removed front seat

Fig 2: Lumbar Support Air Cushion Of Front Seat Backrest Remove/Install Components - Shown On Model 204.981 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1.1	Remove covering on front seat backrest
		Model 204.9, 212, 218	AR91.18-P-1820CX
		Remove/install front seat backrest cover Model 463 Do not remove front seat.	AR91.18-P-1820GP
1.2	Remove front seat backrest padding	Model 204.077/277
1.2	Remove front seat backrest padding	Remove/install front seat backrest upholstery	AR91.10-P-1095CW
2	Remove seat backrest shell from backrest frame (2)	Rechargeable screwdriver, rechargeable drill
3	Remove protective covering from backrest frame (2)
4	Unclip electrical wiring harnesses (3, 4) from wire frame (10)	With code (864) Rear entertainment system or code (866) Rear entertainment preinstallation
5	Disconnect electrical connector (5)
6	Unclip electrical wiring harness (6) at wire frame (10)
7	Remove cable ties (7)
8	Remove bracket (8) of driver seat lumbar support pneumatic pump (M25/4) or front passenger seat lumbar support pneumatic pump (M25/5) from backrest frame (2)
9	Unclip and disconnect electrical connector (9) from backrest frame (2)
10	Unhook wire frame (10) from hooks (arrows A) on backrest frame (2)	Unhook wire frame (10) carefully. Risk of breakage of the hooks (arrows A).
11	Unhook wire frame (10) from mounting holes (arrows B) in backrest frame (2)
12	Swivel wire frame (10) upwards and unhook from mounting holes (arrows C) in backrest frame (2)
13	Remove wire frame (10) with air cushion (1)
14	Install in the reverse order