Remove/Install Front Multicontour Seat/Dynamic Seat Control Unit - AR91.25-P-1900LWO

Model 238 

With Code 399 (Multicontour front seats with massage function) 

Fig 1: Front Multicontour Seat/Dynamic Seat Control Unit Components Location - Model 238 With Code 399

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 front multicontour seat control unit (N32/15, N32/16).	When replacing front multicontour seat control unit (N32/15, N32/16).
			AD00.00-P-2000-06LWO
2	Remove seat backrest trim.		AR91.10-P-1912CLW
3	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).
4	Disconnect electrical connectors (2) at front multicontour seat control unit (N32/15, N32/16).
5	Release front multicontour seat control unit (N32/15, N32/16) and take upward out of holder (1).
6	Release and disconnect pneumatic lines at front multicontour seat control unit (N32/15, N32/16).	The pneumatic lines are color coded.
7	Remove front multicontour seat control unit (N32/15, N32/16).
8	Install in the reverse order