Remove/install seat cushion frame - AR91.10-P-3334MCV

MODEL 451.3/4 

Front passenger seat 

Shown on code (S17) Seat heaters (FFO) 

Fig 1: Identifying Seat Cushion Frame Remove/Install Components - Shown On Code (S17) Seat Heaters (FFO)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Seat Cushion Frame Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  caused by backrest suddenly folding forward if release lever is accidentally operated during inspection and repair work	When working on the seat, be careful not to accidentally release the backrest mechanism allowing the seat to fold forward. Keep body parts clear of the backrest travel area.	AS91.00-Z-0005-01V
	Risk of injury  caused by performing testing or repair work on airbag or emergency tensioning retractor units.	Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. When working on these units, disconnect the power supply.	AS91.00-Z-0001-01A
1	Remove front passenger seat and carefully place on a suitable surface with backrest (8)		AR91.10-P-1020MCU
2.1	Unclip head/thorax airbag connector (1) on seat heater connector (2)	On vehicles with code (S17) Seat heaters (FFO)
2.2	Unclip head/thorax airbag connector (1) from bracket on seat-cushion frame (7)	On vehicles without code (S17) Seat heater (FFO)
3	Expose sidebag wiring harness from brackets (3, 5)
4	Unclip seat belt buckle (4) from bracket on seat-cushion frame (7)
5	Expose seat belt buckle wiring harness (13) from brackets (3)
6	Expose wiring harness for seat heater and disconnect heated cushion connector (6)	On vehicles with code (S17) Seat heaters (FFO)
7	Remove cable tie (arrow)
8	Place front passenger seat on guide rails
9	Unclip belt tension sensor plug (15) and put to one side
10	Unclip belt tension sensor retaining plate (14) in rear area and remove
11	Fold backrest (8) forward
12	Remove bolts (9) of backrest (8)	Position backrest (8) on seat-cushion frame (7) and turn bolts (9, 11) all the way in. Tighten bolts (11), starting from the front. Move backrest (8) to its rearmost position and lock in place. Tighten bolts (9), starting from the rear. While doing so, press the backrest (8) backwards.
			*BA91.10-P-1002-01P
13	Raise backrest (8) in area of seat belt buckle (12) and expose wiring harness for seat belt buckle (13)	Ensure that grommet (10) is seated correctly.
14	Remove bolts (11) from backrest (8) and remove backrest (8)	The front passenger seat-cushion frame (7) may not be dismantled any further.
15	Install in the reverse order