Remove/Install Front Seat Heater/Seat Ventilation Control Unit - AR91.30-P-0036MFA

Model 118, 177, 243, 247 

with code 401 (Climatised front seats) 

with code 873 (Left and right driver's seat heating) 

Fig 1: Front Seat Heater/Seat Ventilation Control Unit Components Location - Model 118 With Code 401, 873

Courtesy of MERCEDES-BENZ USA

Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Carry out commissioning of front seat heating/seat ventilation control unit (N25/17).	If front seat heating/seat ventilation control unit (N25/17) is replaced
			AD00.00-P-2000-06MFA
2	Set driver's seat all the way up and toward rear.
3	Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).
4	Remove bolts from guide rails of driver's seat.		AR91.10-P-1000MFA
5	Tilt driver's seat backwards and release and disconnect electrical connectors (1).
6	Press retaining lugs (2) and take out front seat heating/seat ventilation control unit (N25/17) in direction of travel.	: Ensure that the rear guides retract cleanly and that the retaining lugs (2) audibly engage.
7	Install in the reverse order.