Remove/install backrest lumbar support switch - AR91.25-P-1435NKA

Model 117, 156, 176 with code U22 (4-way lumbar support)

Model 205.0/1/2, 253 with code 221 (Electrically adjustable left driver seat)

Model 205.0/1/2, 253 with code 222 (Electrically adjustable right front seat)

Model 205.0/1/2, 253 with code 275 (Driver's seat, electrically adjustable with memory function)

Model 205.0/2, 253 with code 241 (Memory switch for electrically adjustable driver seat, left)

Model 205.0/2, 253 with code 242 (Front passenger seat, electrically adjustable with memory function)

Model 205.0/2, 253 with code P65 (Seat comfort package)

Shown on removed driver seat

Fig 1: Identifying Backrest Lumbar Support Switch Remove/Install Components - Shown On Removed Driver Seat

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Move front seat to foremost and uppermost position
2	Detach outer cover (1) from front seat frame and place to one side with attached electrical lines	Model 205.0/1/2, 253 with code 221 (Electrically adjustable left driver seat) Model 205.0/1/2, 253 with code 222 (Electrically adjustable right front seat) Model 205.0/1/2, 253 with code 275 (Driver's seat, electrically adjustable with memory function) Model 205.0/2, 253 with code 241 (Memory switch for electrically adjustable driver seat, left) Model 205.0/2, 253 with code 242 (Front passenger seat, electrically adjustable with memory function) Model 205.0/2, 253 with code P65 (Seat comfort package)	AR91.10-P-1200LW
2		Model 117, 156, 176 with code U22 (4-way lumbar support) Do not detach belt end fitting.	AR91.10-P-1200NKB
3	Disconnect electrical connection (2)
4	Unclip driver seat lumbar support adjustment switch (S109/2) or front passenger seat lumbar support adjustment switch (S109/3) at catch hooks (arrows) and remove	Ensure that switch for driver seat lumbar support adjustment (S109/2) or switch for front passenger seat lumbar support adjustment (S109/3) is correctly seated in outer cover (1).
5	Install in the reverse order