Remove/install front seat backrest padding

AR91.10-P-0003FR

Remove/install front seat backrest padding

23.07.2020

Model

257

Model

290

except code 555 (AMG-Performance Seat)

Shown on model 257 with code 866 (Pre-installation for Rear Seat Entertainment System)

12

Flap

14

Long wedge

13

Cover

Shown on model 257 except code 432 (Left and right dynamic multicontour seat)

1

Cover

4

Tab

6

Terminal strip

2

Terminal strip

5

Tab

7

Terminal strip

3

Clamping strips

Shown on model 257 with code 432 (Left and right dynamic multicontour seat) and with code 401 (Seat climate control for driver and front passenger)

15

Electrical connector

16

Electrical connector

17

Pneumatic line

Shown on model 257

1

Cover

8

Backrest padding

9

Catch hook

10

Staple wire



Remove

1

Remove seat backrest trim.

AR91.10-P-1912FR

2

Remove head restraint guides.

AR91.16-P-0051FR

3

Unlock flap (12) with a magnet, open and fix it in such a way that it remains open.

Model 257
with code 866 (Pre-installation for Rear Seat Entertainment System)
Model 290
with code 866 (Pre-installation for Rear Seat Entertainment System)
except code 555 (AMG-Performance Seat)

4

Position long wedges (14) as shown, release the latch at right and left by applying a suitable screwdriver to the opening and remove the cover (13).

Model 257
with code 866 (Pre-installation for Rear Seat Entertainment System)
Model 290
with code 866 (Pre-installation for Rear Seat Entertainment System)
except code 555 (AMG-Performance Seat)


Position long wedges (14) carefully.
Otherwise, the cover (1) may be damaged.

 Long wedge

*115589035900

5

Unhook terminal strips (3).

 Extraction hook

*140589023300

6

Unhook terminal strip (2).

 Dismantling tool

*205589026300

7

Unhook terminal strip (6).

 Extraction hook

*140589023300

8

Unhook terminal strips (7).

 Extraction hook

*140589023300

9

Unhook shackles (4) of cover (1).

10

Unhook shackles (5) of cover (1).

11

Disconnect electrical connector of seat ventilation motors and expose electric line.

Model 257
with code 401 (Climatised front seats)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)

12

Disconnect electrical connector (15), detach from frame and expose respective electric line.

Model 257
with code 401 (Climatised front seats)
Model 257
with code 873 (Left and right driver's seat heating)
Model 257
with code 902 (Seat heater Plus for driver and front passenger)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)
Model 290
with code 873 (Left and right driver's seat heating)
except code 555 (AMG-Performance Seat)
Model 290
with code 902 (Seat heater Plus for driver and front passenger)
except code 555 (AMG-Performance Seat)

13

Disconnect electrical connector (16), detach from frame and expose respective electric line.

Model 257
with code 432 (Dynamic seats left and right)
Model 290
with code 432 (Dynamic seats left and right)
except code 555 (AMG-Performance Seat)

14

Open and expose pneumatic line (17) at connecting point.

Model 257
with code 432 (Dynamic seats left and right)
Model 290
with code 432 (Dynamic seats left and right)
except code 555 (AMG-Performance Seat)

15

Slip cover (1) forwards in lower area, as shown.

16

Unclip staple wires (10) from catch hooks (9).

 Dismantling tool

*205589036300

17

Remove seat backrest padding (8) with cover (1) from seat backrest frame.

18

Remove seat ventilation motors.

Model 257
with code 401 (Climatised front seats)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)
When replacing seat backrest padding (8).

AR91.30-P-1903FR

19

Remove cover (1).

When replacing seat backrest padding (8).

AR91.10-P-8656FR



Install

20

Attach cutout for universal holder to seat backrest padding (8).

Model 257
with code 866 (Pre-installation for Rear Seat Entertainment System)
Model 290
with code 866 (Pre-installation for Rear Seat Entertainment System)
except code 555 (AMG-Performance Seat)
When replacing seat backrest padding (8).

AR91.10-P-1120-01FR

21

Install new heat mat.

Model 257
with code 401 (Climatised front seats)
Model 257
with code 873 (Left and right driver's seat heating)
Model 257
with code 902 (Seat heater Plus for driver and front passenger)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)
Model 290
with code 873 (Left and right driver's seat heating)
except code 555 (AMG-Performance Seat)
Model 290
with code 902 (Seat heater Plus for driver and front passenger)
except code 555 (AMG-Performance Seat)
When replacing seat backrest padding (8).

AR91.30-P-0014FR

22

Install cover (1).

When replacing seat backrest padding (8).

AR91.10-P-8656FR

23

Install seat ventilation motors.

Model 257
with code 401 (Climatised front seats)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)
When replacing seat backrest padding (8).

AR91.30-P-1903FR

24

Align seat backrest padding (8) with cover (1) on seat backrest frame.

25

Clip staple wires (10) into catch hooks (9).

 Dismantling tool

*205589036300

26

Slip cover (1) rearwards in lower area.

27

Route pneumatic line (17) and connect to connecting point.

Model 257
with code 432 (Dynamic seats left and right)
Model 290
with code 432 (Dynamic seats left and right)
except code 555 (AMG-Performance Seat)

28

Route multicontour seat electric line, fix in place on frame and connect electrical connector (16).

Model 257
with code 432 (Dynamic seats left and right)
Model 290
with code 432 (Dynamic seats left and right)
except code 555 (AMG-Performance Seat)

29

Route electric line of seat heating, fix in place on frame and connect electrical connector (15).

Model 257
with code 401 (Climatised front seats)
Model 257
with code 873 (Left and right driver's seat heating)
Model 257
with code 902 (Seat heater Plus for driver and front passenger)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)
Model 290
with code 873 (Left and right driver's seat heating)
except code 555 (AMG-Performance Seat)
Model 290
with code 902 (Seat heater Plus for driver and front passenger)
except code 555 (AMG-Performance Seat)

30

Route electric line of seat ventilation motors for seat backrest, fix in place and connect its electrical connector.

Model 257
with code 401 (Climatised front seats)
Model 290
with code 401 (Climatised front seats)
except code 555 (AMG-Performance Seat)

31

Hook in shackles (5) of cover (1).

32

Hook in shackles (4) of cover (1).

33

Hook in terminal strips (7).

 Extraction hook

*140589023300

34

Clip in terminal strip (6).

 Extraction hook

*140589023300

35

Hook in terminal strip (2).

 The terminal strip (2) should engage audibly.

 Dismantling tool

*205589026300

36

Hook in terminal strips (3).

 Extraction hook

*140589023300

37

Install cover (13).

Model 257
with code 866 (Pre-installation for Rear Seat Entertainment System)
Model 290
with code 866 (Pre-installation for Rear Seat Entertainment System)
except code 555 (AMG-Performance Seat)

 Ensure cover is correctly latched into place and free from any creases (1).

38

Install head restraint guides.

AR91.16-P-0051FR

39

Install seat backrest trim.

AR91.10-P-1912FR