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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seats, Bunks, Restraint Systems - 205 Chassis 2 Of 3 >> Testing & Repair >> Remove/Install Front Seat Heater/Seat Ventilation Control Unit - AR91.30-P-0036LWO

Remove/Install Front Seat Heater/Seat Ventilation Control Unit - AR91.30-P-0036LWO

Model 205 as of 6/1/15, 253 as of 6/1/15 

with code 401 (Climatised Front Seats) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left) 

except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function) 

Model 205 as of 6/1/15, 253 as of 6/1/15 

with code 873 (Left And Right Driver's Seat Heating) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left) 

except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function) 

Model 213 

with code 401 (Climatised Front Seats) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror)) 

Model 213 

with code 873 (Left And Right Driver's Seat Heating) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror)) 

Model 238 

with code 401 (Climatised Front Seats) 

except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror)) 

Model 238 

with code 873 (Left And Right Driver's Seat Heating) 

except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror)) 

Model 293 

with code 401 (Climatised Front Seats) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left) 

except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function) 

Model 293 

with code 873 (Left And Right Driver's Seat Heating) 

except code 221 (Electrically Adjustable Left Driver Seat) 

except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left) 

except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function) 

Fig 1: Front Seat Heater/Seat Ventilation Control Unit Components Location - Model 205 With Codes 401, 873; Except Codes 221, 241, 242 As Of 6/1/15 (Shown On Model 238)
G14197780Courtesy of MERCEDES-BENZ USA

Shown on Model 238 

Topical note Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/Install     
1 Commission front seat heating/seat ventilation control unit (1). When replacing front seat heater/ventilation control unit (1).  
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 293 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 293 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
AD00.00-P-2000-06FR
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 238 with code 401 (Climatised Front Seats) except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 238 with code 873 (Left And Right Driver's Seat Heating) except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
AD00.00-P-2000-06LWO
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 205 as of 6/1/15, 253 as of 6/1/15 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 205 as of 6/1/15, 253 as of 6/1/15 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 213 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 213 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
AD00.00-P-2000-04B
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m).    
3 Remove bolts from guide rails of front passenger seat. Model 205.0/1/2/3 as of 6/1/15, 253 as of 6/1/15 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 205.0/1/2/3 as of 6/1/15, 253 as of 6/1/15 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 213 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 213 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 238 with code 401 (Climatised Front Seats) except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 238 with code 873 (Left And Right Driver's Seat Heating) except code 275 (Memory Package (Driver's Seat, Steering Column And Mirror))
 
Model 293 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 293 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
AR91.10-P-1000LW
    Model 205.4 as of 6/1/15 with code 401 (Climatised Front Seats)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function)
 
Model 205.4 as of 6/1/15 with code 873 (Left And Right Driver's Seat Heating)
except code 221 (Electrically Adjustable Left Driver Seat)
except code 241 (Memory Switch For Electrically Adjustable Front Passenger Seat, Left)
except code 242 (Front Passenger Seat, Electrically Adjustable With Memory Function) IMPORTANT The front passenger seat remains in vehicle.
AR91.10-P-1000LWR 
4 Tilt back front passenger seat and unclip front seat heater/ventilation control unit (1).    
5 Disconnect electrical connectors (2, 3) and remove front seat heater/ventilation control unit (1).    
6 Install in the reverse order.