Remove/install rear seat backrest - AR91.12-P-1620SY

MODEL 221.0 except CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints 

MODEL 221.1 except CODE (223) Rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints except CODE (224) Rear individual seat design 

Fig 1: Identifying Rear Seat Backrest Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Fold down all rear head restraints
2	Remove rear seat cushion		AR91.12-P-1020SY
3	Remove bolts (2)
4	Unscrew nut (3)
5	Move rear seat backrest (1) upwards out of the rear shelf and remove from the vehicle	Remove rear seat backrest (1) from the vehicle carefully, to avoid damage to components in the vehicle interior or on the rear doors. Assistance required to lift either of the outer seat belts or the middle seat belt. Ensure that the retaining brackets (4) have engaged in the corresponding mounts on the rear shelf.
6	Install in the reverse order