Remove/Install Switch For Backrest Lumbar Support - AR91.25-P-1436ME

Model 167 

with code 275 (Driver's seat, electrically adjustable with memory function) 

Model 167 

with code U22 (Lumbar support adjustment) 

Courtesy of MERCEDES-BENZ USA

Shown with CODE 275 (Electrically adjustable driver seat with memory function) 

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Move corresponding front seat (1) forwards.
2	Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).
3	Remove trim (2).	It is not necessary to remove the front seat (1) if only the trim parts (2, 3) are being removed.	AR91.10-P-1200ME
4	Detach trim (3) so that electrical connector is accessible.	It is not necessary to remove the front seat (1) if only the trim parts (2, 3) are being removed.	AR91.10-P-1200ME
5	Release and disconnect electrical connector from driver seat lumbar support adjustment switch (S109/2) or front passenger seat lumbar support adjustment switch (S109/3).
6	Unclip driver seat lumbar support adjustment switch (S109/2) or front passenger seat lumbar support adjustment switch (S109/3).
7	Install in the reverse order.