Remove/install multicontour seat air cushion or dynamic seat at front seat backrest - AR91.25-P-1747EW

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MODEL 212 with CODE (409) Left/right front multicontour seat with CODE (432) Left and right dynamic multicontour seat

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

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

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

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

Shown on model 212

Fig 1: Multicontour Seat Air Cushion Remove/Install Components - Shown On Model 212 (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Multicontour Seat Air Cushion Remove/Install Components - Shown On Model 212 (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Multicontour Seat Air Cushion Remove/Install Components - Shown On Model 212 (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit	KEYLESS-GO start/stop button only with code (889) Keyless-Go.
2	Remove cover with padding at front seat backrest	Do not separate cover from padding.
		Model 212	AR91.18-P-1820CX
		Model 463	AR91.18-P-1820GP
3	Remove dynamic seat control unit	Model 212 with code (432) Left and right dynamic multicontour seat	AR91.25-P-1800EW
4	Remove left and right shaped parts (2) at backrest frame (5)
5	Remove left and right screws/bolts (3) at seat backrest shell (4)
6	Unclip both side air cushions (1.1) at seat backrest shell (4) (arrows A)	Ensure that side air cushion (1.1) is seated correctly at seat backrest shell (4).
7	Detach seat backrest shell (4) at backrest frame (5) toward top and place to rear	Ensure that shackles (arrows B) of seat backrest shell (4) are seated correctly in backrest frame (5).
8	Remove left and right screws/bolts (6, 8) at backrest frame (5)
9	Separate cable tie (12, 13)
10	Unclip clips (10, 11) at air cushion unit (1)
11	Swivel both side air cushions (1.1) forward at bottom until catch hooks (9) are detached and can move freely at backrest frame (5)	Ensure that catch hooks (9) are seated correctly at backrest frame (5).
12	Lift up both side air cushions (1.1) until catch hooks (7) are detached and can move freely at backrest frame (5)	Ensure that catch hooks (7) are seated correctly at backrest frame (5).
13	Successively unhook wire hoops (1.3) from openings (arrows E) at backrest frame (5) by pushing to one side
14	Swivel air cushion unit (1) forward at bottom, unhook both wire hoops (1.2) at backrest frame (5) and remove air cushion unit (1)
15	Install in the reverse order