Remove/Install Lumbar Support Air Cushion On Front Seat - AR91.25-P-1450ME

Model 167 

with code U22 (Lumbar support adjustment) 

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	Remove cover from front seat backrest without loosening the padding from the cover.		AR91.18-P-1822ME
2	Release and disconnect electrical connections (1).
3	Unclip retaining clips (2).	Dismantling tool	Fig 1
4	Sever cable tie at lumbar support pneumatic pump (M25/4 or M25/5).	Replace cable tie.
5	Detach lumbar support (3) from seat backrest frame (4) and remove.	The lumbar support (3) is one unit. It consists of the lumbar support adjustment control unit (N32/23 or N32/24), lumbar support pneumatic pump (M25/4 or M25/5), air cushion and hoses; the unit cannot be disassembled.
6	Install in the reverse order

Fig 1: Identifying Dismantling Tool (000 589 95 63 00)

Courtesy of MERCEDES-BENZ USA