Remove/Install Multi-Contour Seat Air Cushions - AR91.25-P-1770FRX

Model 290 

with code 409 (Left and right front multicontour seat) 

with code 555 (AMG-Performance Seat) 

except code U10 (Front passenger seat with weight sensor) 

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove seat cushion padding.		AR91.10-P-5040FRX
2	Disconnect and expose pneumatic lines (3) at connecting point on seat adjustment unit.
3	Unscrew screw/bolts (1).
4	Remove reinforcement (2) together with air cushion (4).
5	Drill out rivets in air cushions (4).	Replace the rivets.
6	Remove air cushions (4).	The air cushions (4) form a unit and can only be replaced together.
7	Install in the reverse order