Remove/install front seat

AR91.10-S-1000S

Remove/install front seat

02.05.2017

Model

636, 639

Shown on MODEL 639

1

Screw

2

Screw

3

Electrical connector

4

Front seat

N32/1

Left front seat adjustment control unit with memory

N32/2

Right front seat adjustment control unit with memory

X28/18

Seat occupied recognition with ACSR [AKSE] connector

X28/29

Thoraxbag squib connector, driver

X28/30

Thoraxbag squib connector, front passenger

X54/29

Heated seats connector, left front

X54/30

Heated seats connector, right front

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

 

Remove/install

1

Move backrest into upright position

Model 636
Model 639.6
except code S05 (Co-driver's seat not adjustable)
Model 639.7/8

2

Move front seat (4) to working position

Model 636
Model 639.6
except code S05 (Co-driver's seat not adjustable)
Model 639.7/8

 Move front seat (4) to front and upwards.

3

Remove bolt (1)

 Model 639Bolt, seat to seat console

*BA91.10-N-1001-01F

 Bolt, seat rail to seat console

*BA91.10-N-1003-01F

 Model 639Bolt, seat rail to turntable

*BA91.10-N-1004-01F

4

Move front seat (4) to rear

Model 636
Model 639.6
except code S05 (Co-driver's seat not adjustable)
Model 639.7/8

5

Disconnect battery ground line

Model 639
with code SH7 (Thorax bag for driver + co-driver (in seat back))

MODEL 639 except CODE MA0 (E-CELL 60 kW)

AR54.10-S-0003S

* Applies to Europe only



Disconnect/connect battery ground line
MODEL 639.603/703 with ENGINE 780.994 with CODE MA0 (E-CELL 60 kW)

AR54.10-S-0003EV

6

Remove bolts (2)

 Model 639Bolt, seat to seat console

*BA91.10-N-1001-01F

 Bolt, seat rail to seat console

*BA91.10-N-1003-01F

 Model 639Bolt, seat rail to turntable

*BA91.10-N-1004-01F

7

Disconnect left front seat heater connector (X54/29) or right front seat heater connector (X54/30)

Model 636, 639
with code H15 (Seat heater for front passenger)
Model 636, 639
with code H16 (Heated seat for driver)

 Warning

Risk of injury caused by performing testing or repair work on airbag or emergency tensioning retractor units.

Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. When working on these units, disconnect the power supply.

AS91.00-Z-0001-01A

8

Disconnect thoraxbag squib connector, driver (X28/29) or thoraxbag squib connector, front passenger (X28/30)

Model 639
with code SH7 (Thorax bag for driver + co-driver (in seat back))

9

Disconnect seat occupied recognition with ACSR [AKSE] connector (X28/18)

Model 636, 639
with code SA6 (Airbag, co-driver)

10

Disconnect electrical connector (3)

Model 636, 639
with code SF1 (Electrically adjustable luxury driver seat)
Model 636, 639
with code SF2 (Electrically adjustable co-driver's seat)

11

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)

Model 636, 639
with code SF1 (Electrically adjustable luxury driver seat)
Model 636, 639
with code SF2 (Electrically adjustable co-driver's seat)

12

Remove front seat (4)

 use aid of helper.

13

Install in the reverse order

14

Perform normalization of seat adjustment

Model 636, 639
with code SF1 (Electrically adjustable luxury driver seat)
Model 636, 639
with code SF2 (Electrically adjustable co-driver's seat)

 To do so, move front seat (4) to respective end stop and keep button pressed for approx. 1 s.



Check

15

Check front seat (4) for proper operation

 With the corresponding equipment, check electric components for proper operation.

 Front seats

Number

Designation

Model 639

BA91.10-N-1001-01F

Bolt, seat to seat console

Nm

33

 Front seats

Number

Designation

Model 636

Model 639

BA91.10-N-1003-01F

Bolt, seat rail to seat console

Nm

33

33

 Front seats

Number

Designation

Model 639

BA91.10-N-1004-01F

Bolt, seat rail to turntable

Nm

33