Remove/Install Multicontour Backrest Control Unit On Front Seat - AR91.25-P-1750FRX

Model 290 

with code 409 (Left and right front multicontour seat) 

with code 555 (AMG-Performance Seat) 

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	Perform commissioning of front multicontour seat control unit (N32/15, N32/16).	When replacing front multicontour seat control unit (N32/15, N32/16).
			AD00.00-P-2000-06FR
2	Remove seat backrest padding.		AR91.10-P-0003FRX
3	Remove retaining clips at air cushion (1), remove air cushion (1) and place to one side.
4	Remove screw (2) and place seat belt (3) to one side.
5	Unfasten felt tapes (4).
6	Remove front multicontour seat control unit (N32/15, N32/16), from the holder until the electrical connector (5) and the pneumatic lines are accessible.
7	Disconnect electrical connector (5).
8	Release and disconnect pneumatic lines from front multicontour seat control unit (N32/15, N32/16).	The pneumatic lines are color coded.
9	Remove front multicontour seat control unit (N32/15, N32/16).
10	Install in the reverse order