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Home >> Mercedes Benz >> 2016 >> C300 Base >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seats, Bunks, Restraint Systems - 205 Chassis (4D Sedan) - 2 Of 2 >> Testing & Repair >> Remove/install upper part of seat adjustment unit on front seat - AR91.10-P-1451LW

Remove/install upper part of seat adjustment unit on front seat - AR91.10-P-1451LW

Model 205.0/1/2 

Model 253 

Fig 1: Identifying Seat Adjustment Unit Upper Part On Front Seat Remove/Install Components
G10135108Courtesy of MERCEDES-BENZ USA
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove seat cushion Model 205.0/1/2, 253
except code 221 (Electrically adjustable left driver seat)
except code 222 (Electrically adjustable right front seat)
except code 241 (Memory switch for electrically adjustable driver seat, left)
except code 242 (Front passenger seat, electrically adjustable with memory function)
except code 275 (Driver's seat, electrically adjustable with memory function)
except code P65 (Seat comfort package)
Model 205.0/1/2, 253
with code 221 (Electrically adjustable left driver seat)
with code 494 (US version)
except code 222 (Electrically adjustable right front seat)
except code 241 (Memory switch for electrically adjustable driver seat, left)
except code 242 (Front passenger seat, electrically adjustable with memory function)
except code 275 (Driver's seat, electrically adjustable with memory function)
except code P65 (Seat comfort package)
Model 205.0/1/2, 253
with code 222 (Electrically adjustable right front seat)
with code 494 (US version)
except code 221 (Electrically adjustable left driver seat)
except code 241 (Memory switch for electrically adjustable driver seat, left)
except code 242 (Front passenger seat, electrically adjustable with memory function)
except code 275 (Driver's seat, electrically adjustable with memory function)
except code P65 (Seat comfort package)		 AR91.10-P-3310LW 
Model 205.0/1/2, 253
with code 221 (Electrically adjustable left driver seat)
except code 494 (US version)
Model 205.0/1/2, 253
with code 222 (Electrically adjustable right front seat)
except code 494 (US version)
Model 205.0/1/2, 253
with code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code 241 (Memory switch for electrically adjustable driver seat, left)
Model 205.0/2, 253
with code 242 (Front passenger seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code P65 (Seat comfort package)		 AR91.10-P-3310LWA 
2 Remove sensor mat with weight sensing system (WSS) sensor from upper part of seat adjustment unit (1) Model 205.0/1/2, 253
with code U10 (Automatic seat occupancy recognition and child seat recognition)
When removing upper part of seat adjustment unit (1) on front passenger side.		  
3 Detach left and right wiring (4) INSTALLATION IMPORTANT Check retaining clips (5).
In the event of complaints:
↓
Replace corresponding retaining clip (5).		  
4 Disconnect electrical connection from electric wiring harness (9) Model 205.0/1/2, 253
with code 221 (Electrically adjustable left driver seat)
except code 494 (US version)
Model 205.0/1/2, 253
with code 222 (Electrically adjustable right front seat)
except code 494 (US version)
Model 205.0/1/2, 253
with code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code 241 (Memory switch for electrically adjustable driver seat, left)
Model 205.0/2, 253
with code 242 (Front passenger seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code P65 (Seat comfort package)		  
5 Expose electrical lines on spring element (2) and upper part of seat adjustment unit (1) IMPORTANT Number of electrical lines differs according to configuration.  
6 Unhook spring element (2) from seat adjustment unit, fold up and remove from upper part of seat adjustment unit (1)    
7 Unscrew screw/bolt (7) Model 205.0/1/2, 253
with code 221 (Electrically adjustable left driver seat)
Model 205.0/1/2, 253
with code 222 (Electrically adjustable right front seat)
Model 205.0/1/2, 253
with code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code 241 (Memory switch for electrically adjustable driver seat, left)
Model 205.0/2, 253
with code 242 (Front passenger seat, electrically adjustable with memory function)
Model 205.0/2, 253
with code P65 (Seat comfort package)
IMPORTANT Note left-hand thread of screw/bolt (7).
INSTALLATION IMPORTANT Replace bolt (7).		  
TORQUE SPECIFICATION Bolt, linkage for electric motor for seat cushion inclination to seat adjustment unit upper section *BA91.10-P-1004-01T 
8 Remove screws/bolts (6, 8) IMPORTANT Model 205.0/1/2, 253
except code 221 (Electrically adjustable left driver seat)
except code 222 (Electrically adjustable right front seat)
except code 241 (Memory switch for electrically adjustable driver seat, left)
except code 242 (Front passenger seat, electrically adjustable with memory function)
except code 275 (Driver's seat, electrically adjustable with memory function)
except code P65 (Seat comfort package) Two screws/bolts (6) are installed.
INSTALLATION IMPORTANT Replace screws/bolts (6, 8).		  
TORQUE SPECIFICATION Bolt, seat adjustment unit upper section to front seat adjustment unit *BA91.10-P-1006-01T 
9 Remove bolts (3) TORQUE SPECIFICATION Bolt/nut, seat adjustment unit upper section to rear seat adjustment unit *BA91.10-P-1007-01T 
10 Remove upper part of seat adjustment unit (1)    
11 Install in the reverse order    
FRONT SEATS

Number Designation Model 205 Model 253
BA91.10-P-1004-01T Bolt, linkage for electric motor for seat cushion inclination to seat adjustment unit upper section Nm 7 7
FRONT SEATS

Number Designation Model 205 Model 253
BA91.10-P-1006-01T Bolt, seat adjustment unit upper section to front seat adjustment unit Nm 15 15
FRONT SEATS

Number Designation Model 205 Model 253
BA91.10-P-1007-01T Bolt/nut, seat adjustment unit upper section to rear seat adjustment unit Nm 10 10
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