Remove/install rear head restraint mechanical system - AR91.16-P-1780SX

MODEL 221.0 /1 

Fig 1: Identifying Rear Head Restraint Mechanical System Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Rear Head Restraint Mechanical System Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1.1	Remove rear seat backrest	For vehicles without code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or without code (224) Individual rear seat system design)	AR91.12-P-1620SY
1.2	Remove left or right rear seat backrest	In vehicles with code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or code (224) Individual rear seat system design without code (Z07) Top protection	AR91.12-P-1620SX
		In vehicles with code (Z07) Top protection	AR91.12-P-1620SXS
2	Remove middle and each outer head restraint in rear compartment	When removing center folding device (3) all rear head restraints must also be removed.
		Vehicles without code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or without code (224) Individual rear seat system design)	AR91.16-P-1770SX
		Vehicles with code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or code (224) Individual rear seat system design without code (Z07) Top protection	AR91.16-P-1770SY
		Vehicles with code (Z07) Top protection	AR91.16-P-1770SXS
3	Remove left or right trim from C-pillar	Place trim at bottom of C-pillar with attached seat belt to one side.
		Vehicles without code (Z07) Top protection	AR68.30-P-4490SX
		Vehicles with code (Z07) Top protection	AR68.30-P-4490SXS
4.1	Remove frame with stowage compartment (4) or ski bag mounting	When removing center folding device (3). Ski bag mounting for vehicles with code (282) Ski bag (through-loading feature).
5	Release trim on rear shelf (5) and then raise until the screws (6) are accessible
6.1	Detach pneumatic line (8) to center folding device (3)	When removing center folding device (3).
7.1	Detach pneumatic line (8) to left folding device (1) or right folding device (2)	When removing left folding device (1) or right folding device (2) on vehicles without code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or without code (224) Rear individual seat system design.
7.2	Detach electrical connector on left rear head restraint inclination adjustment motor (M18/15) or on right rear head restraint inclination adjustment motor (M18/16)	When removing left rear head restraint inclination adjustment motor (M18/15) or the right rear head restraint inclination adjustment motor (M18/16) on vehicles with code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or with code (224) Rear individual seat system design.
8	Unscrew appropriate bolts (6)
9	Undo corresponding bolts (7) by several threads
10	Remove left or right side paneling in trunk	When removing center folding device (3) or when the left folding device (1) and right folding device (2) or the left rear head restraint inclination adjustment motor (M18/15) and the right rear head restraint inclination adjustment motor (M18/16) are removed together, both trims at the side in the luggage compartment must also be removed.
		Vehicles without code (Z07) Top protection	AR68.30-P-4600SX
		Vehicles with code (Z07) Top protection	AR68.30-P-4600SXS
11	Detach upper trim and fold down	When removing center folding device (3) or when the left folding device (1) and right folding device (2) or the left rear head restraint inclination adjustment motor (M18/15) and the right rear head restraint inclination adjustment motor (M18/16) are removed together, the upper trim in the luggage compartment must be completely removed.
12	Remove expansion clip on corresponding soundproofing (9) and remove soundproofing (9)
13	Remove folding device (1, 2, 3) or left rear head restraint inclination adjustment motor (M18/15), right rear head restraint inclination adjustment motor (M18/16) downwards	When removing right folding device (2) or right rear head restraint inclination adjustment motor (M18/16) make sure that the electrical connections on the rear SAM control unit with fuse and relay module are not short circuited to the vehicle ground, as otherwise the vehicle's electrical system will be damaged.
14	Install in the reverse order
15.1	Normalize the left rear head restraint inclination adjustment motor (M18/15), right rear head restraint inclination adjustment motor (M18/16) using STAR DIAGNOSIS	For vehicles with code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning feature for outer seats and outer head restraint or code (224) Individual rear seat system design)
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A