Remove/Install Front Seat Backrest Lumbar Support Air Cushion - AR91.25-P-1445LW

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 205, 253, 293 with code U22 (Lumbar support adjustment) except code 409 (Left and right front multicontour seat)

MODEL 213 with code U22 (Lumbar support adjustment) except code 432 (Dynamic seats left and right)

MODEL 238 with code U22 (Lumbar support adjustment) except code 399 (Front multicontour seat with massage function)

Fig 1: Front Seat Backrest Lumbar Support Air Cushion Components Location - Model 253 With Code U22 (Shown On Model 205.0)

Courtesy of MERCEDES-BENZ USA

Shown on model 205.0 on removed driver's seat

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove seat backrest padding (2).	Model 205.0/1/2, 253, 293 with code U22 (Lumbar support adjustment) except code 409 (Left and right front multicontour seat) except code 555 (AMG Performance seats) Model 213 with code U22 (Lumbar support adjustment) except code 432 (Dynamic seats left and right) except code 555 (AMG Performance seats)	AR91.10-P-0003LWE
		Model 205.3/4 with code U22 (Lumbar support adjustment) except code 409 (Left and right front multicontour seat) except code 555 (AMG Performance seats) Model 238 with code U22 (Lumbar support adjustment) except code 399 (Front multicontour seat with massage function)	AR91.10-P-0003CLW
2	Detach cable ties (4).	Install new cable tie (4).
3	Unhook lumbar support pneumatic pump (M25/4, M25/5) with protective sleeve from seat backrest frame.	The lumbar support pneumatic pump (M25/4, M25/5) must not be removed from its protective sleeve. Otherwise, the lumbar support pneumatic pump (M25/4, M25/5) may be damaged.
4	Disconnect electrical connection (6).
5	Detach electrical connector (7).
6	Unhook lumbar support electropneumatic controller unit (N32/23, N32/24) from spring element (5) and route forward, between seat backrest frame and spring element (5).
7	Route lumbar support pneumatic pump (M25/4, M25/5) forward, between seat backrest frame and spring element (5).
8	Mark installation position of air cushion unit (3) on spring element (5).
9	Unhook and remove air cushion unit (3) from spring element (5).	Observe markings.
10	Install in the reverse order