Remove/Install Rear Multicontour Seat Control Unit - AR91.25-P-0002S

Model 223 

with code 406 (Multicontour rear seat) 

Shown on left side of vehicle 

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Commission rear multicontour seat control unit (N164/3, N164/4).	When replacing rear multicontour seat control unit (N164/3, N164/4).
			AD00.00-P-2000-06FR
2	Remove rear seat backrest trim.		AR91.12-P-1134S
		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)
3	Remove backrest in rear passenger compartment.		AR91.12-P-1713SA
		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)
4	Disconnect electrical connectors (1).
5	Disconnect pneumatic lines (2).	The pneumatic lines (2) are color coded.
6	Release and remove rear multicontour seat control unit (N164/3, N164/4).
7	Install in the reverse order.