Remove/Install Air Cushion Of Multicontour Backrest In Rear - AR91.25-P-1752S

Model 223 

with code 406 (Multicontour rear seat) 

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Unfasten seat backrest padding until air cushions (1) of multicontour seat backrest are accessible.		AR91.18-P-1870SA
		Model 223 with code 223 (Electric backrest adjustment and head restraints) with code 224 (Rear individual seat design) with code 406 (Multicontour rear seat) Model 223 with code 223 (Electric backrest adjustment and head restraints) with code 406 (Multicontour rear seat) except code 224 (Rear individual seat design)
		Do not remove cover of seat backrest padding.
2	Remove screw/bolts (2).
3	Disconnect pneumatic line (3) from rear multicontour seat control unit (N164/3, N164/4).	Ensure pneumatic line (3) is routed correctly. Malfunctions can occur otherwise.
4	Expose pneumatic lines (3, 4).	Ensure that pneumatic lines (3, 4) are routed correctly. Malfunctions can occur otherwise.
5	Remove air cushions (1) of multicontour seat backrest.
6	Install in the reverse order.