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Remove/install front seat - AR91.10-P-1000SX

MODEL 221.0/ 1 

Fig 1: Identifying Front Seat, Covers, Screws And Bolts
G07601792Courtesy of MERCEDES-BENZ USA

Shown on right front seat (1) 

Fig 2: Identifying Front Seat Control Units, Pneumatic Line, Electrical Connectors And Bowden Cable
G07601793Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

13.5.09 Value modified: Seat bolt to vehicle floor   *BA91.10-P-1002-01O
REMOVING Removing     
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 Notes on performing repair, body work and welding on vehicles with airbags or emergency tensioning retractor units   AH91.00-P-0002-01M
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
IMPORTANT Assessment of airbag and emergency tensioning retractor units in accident vehicles   AH91.00-P-0006-01B
IMPORTANT Legal requirements on handling and storing airbags and emergency tensioning retractor units   AH91.00-P-0004-01A
1 Remove door sill molding from left and right front door Model 221.0 and model 221.1 without code (Z07) Top protection. AR68.30-P-4100SX
Model 221.1 with code (Z07) Top protection. AR68.30-P-4100SXS
2 Move front seat (1) backwards and upwards    
3 Move backrest into vertical position    
4 Pull cover (5) forwards and out    
5 Unscrew bolts (6, 7)    
6 Move front seat (1) forwards    
7 Detach cover (8) from front seat (1) SPECIAL TOOL Fig 3
8 Disconnect electrical connector from belt tensioner sensor At front passenger seat of vehicles with code (494) USA version.
IMPORTANT The belt tensioner sensor is located under the cover (8) at the belt end fitting of the front passenger seat.
 
9 Remove the screw (9) and remove belt end fitting    
10 Push cover (2) backwards and remove    
11 Pull cover (3) upwards and unclip SPECIAL TOOL Fig 3
12 Remove bolts (4, 13)    
13 Disconnect battery ground line   AR54.10-P-0003SX
14 Fold back front seat (1)    
15 Disconnect electrical connectors (11) from left front seat control unit (N32/1) or right front seat control unit (N32/2) IMPORTANT Disconnect electrical connectors (11) only after waiting at least 10 s after the last seat adjustment, otherwise the normalization of the seat will be lost.  
16 Disconnect pneumatic line (10) at plug    
17 Remove Bowden cable (12) for belt height adjuster    
18 Carefully remove front seat (1) from vehicle IMPORTANT Aid of helper required.  
INSTALLING Install     
19 Carefully place front seat (1) in the vehicle and fold back IMPORTANT Aid of helper required.  
20 Install Bowden cable (12) for belt height adjuster    
21 Connect pneumatic line (10) at plug    
22 Connect electrical connectors (11) to left front seat control unit (N32/1) or right front seat control unit (N32/2)    
23 Connect ground cable to battery   AR54.10-P-0003SX
24 Tighten screw (4) NOTES Tighten bolts (4, 6, 7, 13) in the sequence specified in the work steps, otherwise the front seat (1) cannot be installed without tension. This could cause noises and increased wear.
IMPORTANT Use tightening pattern in mirror reverse for left front seat (1).
 
TORQUE SPECIFICATION *BA91.10-P-1002-01O
25 Insert cover (2) and push forwards    
26 Insert bolt (13) and turn in slightly IMPORTANT Do not tighten the bolt (13) yet.  
27 Move front seat (1) to rear    
28 Tighten bolt (7) TORQUE SPECIFICATION *BA91.10-P-1002-01O
29 Tighten bolts (6) TORQUE SPECIFICATION *BA91.10-P-1002-01O
30 Clip in cover (5)    
31 Move front seat (1) forwards    
32 Tighten bolt (13) TORQUE SPECIFICATION *BA91.10-P-1002-01O
33 Clip in cover (3)    
34 Position belt end fitting and tighten bolt (9) TORQUE SPECIFICATION *BA91.40-P-1001-01O
35 Connect electrical connector to belt tensioner sensor At front passenger seat of vehicles with code (494) USA version.  
36 Clip cover (8) onto front seat (1)    
37 Install door sill molding Model 221.0 and model 221.1 without code (Z07) Top protection AR68.30-P-4100SX
Model 221.1 with code (Z07) Top protection AR68.30-P-4100SXS
38 Parameterize weight sensing system (WSS) with STAR DIAGNOSIS After installing the front passenger seat on vehicles with code (494) USA version.
IMPORTANT Connect "Commissioning/Readjusting" menu item
 
SPECIAL TOOL Fig 4
REFER TO SELF-DIAGNOSTIC SYSTEMS STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A
FRONT SEATS

Number Designation Model 221
BA91.10-P-1002-01O Seat bolt to vehicle floor Nm 53
SEAT BELTS/EMERGENCY TENSIONING RETRACTORS

Number Designation Model 221
BA91.40-P-1001-01O Screw on belt end fitting Nm 32
Fig 3: Identifying Mounting Wedge (110 589 03 59 00)
G07601794Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Plates (211 589 00 32 00)
G07601795Courtesy of MERCEDES-BENZ USA