Remove/install front seat backrest frame

AR91.10-P-3331R

26.1.10

MODEL 230.4
with CODE (404) Left multicontour seat
with CODE (405) Right multicontour seat

P91.10-2354-09

Shown on right side of backrest frame

1 Backrest frame

2 Wiring harness

3 Bracket

4 Trim

N32/1 Left front seat adjustment control unit with memory

N32/2 Right front seat adjustment control unit with memory

5 Bolt

6 Backrest fitting threaded insert

7 Bolt

8 Mounting plate threaded insert

 	Remove/install
1	Remove left or right front seat		AR91.10-P-1000R
2	Remove seat cushion		AR91.10-P-3310R
3	Remove seat belt from front seat		AR91.40-P-1010R
4	Remove multicontour backrest air cushion		AR91.25-P-1740R
5	Remove multicontour backrest side air cushions		AR91.25-P-1741R
6.1	Remove blower regulator for seat ventilation motors at front seat	On vehicles with code (401) Front deluxe seats incl. seat heating and seat ventilation.	AR91.30-P-1910R
7	Remove multicontour backrest control unit from front seat		AR91.25-P-1750R
8	Remove trim (4) from seat cushion frame
9	Disconnect electrical connectors from left front seat adjustment control unit with memory (N32/1) or right front seat adjustment control unit with memory (N32/2)
10	Detach electrical connector and pneumatic line from bracket (3)
11	Unclip electrical wiring harness (2) from seat cushion frame	 Installation: Make sure that routing of the electric wiring harness (2) is correct.
12	Remove bolts (5) at left and right backrest fitting and pull out left and right backrest fitting threaded insert (6)	 Installation: Replace bolts (5).
			*BA91.10-P-1003-01A
13	Remove bolt (7) from left and right mounting plate and pull out left and right bearing plate threaded insert (8)		*BA91.10-P-1002-01A
14	Remove backrest frame (1) from seat cushion frame
15	Install in the reverse order

 Front seats

Number	Designation		Model 230


BA91.10-P-1002-01A	Bolt to bearing plate for inclination adjustment shaft	Nm	40
BA91.10-P-1003-01A	Bolt at backrest fitting	Nm	8