Remove/install front seat

AR91.10-P-1000V

Remove/install front seat

15.11.11

3.1.08

Version with lumbar support setting incorporated, special tool added

Operation step 8, 9, 10

 

Remove/install

Danger!

Risk of injury caused by backrest suddenly folding forward if release lever is accidentally operated during inspection and repair work

When working on the seat, be careful not to accidentally release the backrest mechanism allowing the seat to fold forward. Keep body parts clear of the backrest travel area.

AS91.00-Z-0005-01V

 Danger!

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



Notes on performing repair, body work and welding on vehicles with airbags and ETR units

AH91.00-P-0002-01M



Notes on seat occupied recognition

As of 1.6.06 with code (494) USA version, front passenger seat

AH91.60-P-0760-01P



Information on machining/treating magnesium components

AH60.00-P-0023-01R



Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A



Assessment of airbag and emergency tensioning retractor units in accident vehicles

AH91.00-P-0006-01B



Legal requirements on handling and storing airbags and emergency tensioning retractor units

AH91.00-P-0004-01A

1

Completely open Vario roof

2

Move seat cushion (2) of left or right front seat (1) all the way upward and then move the front seat (1) forward

3

Fold backrest (3) forward

4

Disconnect electrical connector (15) of belt tension sensor (B48/3)

Right front seat (1) only as of 1.6.06 with code (494) USA version

 Installation: Make sure that the electrical connector (15) is seated correctly in the bracket (16).

5

Open belt guide (4) at backrest (3), remove bolt (5) at belt end fitting (6) and guide belt end fitting (6) out of trim (7)



*BA91.40-P-1001-01A



*203589021000



Notes on calculating tightening torque when using insertion tool with various effective lengths.

AH00.00-P-0015-01CW

6

Remove left and right bolt (8) at rear on seat rails

 Installation: Install new bolts (8).

 Installation: Align seat rails before tightening bolts (8).



*BA91.10-P-1007-01A

7

Position front seat (1) to rear

8

Push catch hooks (arrows A and B) at control valve (12) inwards and remove cover (11) of control valve (12) forwards

For vehicles with code (U22) Lumbar support setting

9

Actuate the catch hook (arrow C) on the underside of the seat cushion frame (13) and slide the control valve (12) to the side all the way to the stop

For vehicles with code (U22) Lumbar support setting

10

Disconnect pneumatic connector (14)

For vehicles with code (U22) Lumbar support setting



*000589043700

11

Remove left and right bolt (8) at front on seat rails

 Installation: Install new bolts (8).

 Installation: Align seat rails before tightening bolts (8).



*BA91.10-P-1007-01A

12

Tilt front seat (1) back until electrical connectors (9) are accessible

13

Disconnect electrical connectors (9)

 The number of electrical connectors (9) can vary depending on the equipment.

14

Disconnect electrical connector (10) from the driver-side front seat adjustment control unit with memory (N32/1) or passenger-side front seat adjustment control unit with memory (N32/2)

On vehicles with code (242) Electrically adjustable front passenger seat with memory or
with code (275) Memory package (driver seat, steering column, mirrors)

15

Remove front seat (1)

 Remove front seat (1) carefully, as otherwise the front seat (1) or the interior equipment may be damaged.

 Aid of helper required.

16

Install in the reverse order

Number

Designation

Model
171

BA91.10-P-1007-01A

Screw/bolt, seat to vehicle floor

Nm

50

Number

Designation

Model
171

BA91.40-P-1001-01A

Screw on belt end fitting

Nm

30