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Home >> Mercedes Benz >> 2021 >> E53 AMG 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Exterior Trim >> Seats, Bunks, Restraint Systems - 238 Chassis (2 Of 4) >> Testing & Repair >> Remove/Install Driver'S Seat Heater Control Unit - AR91.30-P-0034LWO

Remove/Install Driver'S Seat Heater Control Unit - AR91.30-P-0034LWO

Model 213, 238 

With Code 902 (Seat heater Plus for driver and front passenger) 

Model 205.### 1# up to 5/31/15, 253.### 1# up to 5/31/15 

With Code 401 (Climatised front seats) 

except code 221 (Electrically adjustable left driver seat) 

except code 275 (Driver's seat, electrically adjustable with memory function) 

Model 205.### 1# up to 5/31/15, 253.### 1# up to 5/31/15 

With Code 873 (Left and right driver's seat heating) 

except code 221 (Electrically adjustable left driver seat) 

except code 275 (Driver's seat, electrically adjustable with memory function) 

Model 205.### 2# up to 5/31/15, 253.### 2# up to 5/31/15 

With Code 401 (Climatised front seats) 

except code 222 (Electrically adjustable right driver seat) 

except code 275 (Driver's seat, electrically adjustable with memory function) 

Model 205.### 2# up to 5/31/15, 253.### 2# up to 5/31/15 

With Code 873 (Left and right driver's seat heating) 

except code 222 (Electrically adjustable right driver seat) 

except code 275 (Driver's seat, electrically adjustable with memory function) 

Fig 1: Driver's Seat Heater Control Unit Components Location - Model 238 With Code 902
G15379408Courtesy 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 driver's seat control unit for seat heating (1). When replacing the driver's seat heater control unit (1).  
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 238 with code 902 (Seat heater Plus for driver and front passenger) AD00.00-P-2000-06LWO
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 205.### 1# up to 5/31/15, 253.### 1# up to 5/31/15 with code 401 (Climatised front seats) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.### 1# up to 5/31/15, 253.### 1# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.### 2# up to 5/31/15, 253.### 2# up to 5/31/15 with code 401 (Climatised front seats) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.### 2# up to 5/31/15, 253.### 2# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 213 with code 902 (Seat heater Plus for driver and front passenger)
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 driver's seat. Model 205.0##/1##/2##/3## 1# up to 5/31/15, 253.### 1# up to 5/31/15 with code 401 (Climatised front seats) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0##/1##/2##/3## 1# up to 5/31/15, 253.### 1# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0##/2##/3## 2# up to 5/31/15, 253.### 2# up to 5/31/15 with code 401 (Climatised front seats) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.0##/2##/3## 2# up to 5/31/15, 253.### 2# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 213, 238 with code 902 (Seat heater Plus for driver and front passenger)
AR91.10-P-1000LW 
    Model 205.4## 1# up to 5/31/15 with code 401 (Climatised front seats) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.4## 1# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 221 (Electrically adjustable left driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.4## 2# up to 5/31/15 with code 401 (Climatised front seats) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
Model 205.4## 2# up to 5/31/15 with code 873 (Left and right driver's seat heating) except code 222 (Electrically adjustable right driver seat) except code 275 (Driver's seat, electrically adjustable with memory function)
IMPORTANT The driver's seat remains in the vehicle.
AR91.10-P-1000LWR
4 Tilt back driver's seat and unclip the driver's seat control unit for seat heating (1).    
5 Disconnect electrical connectors (2, 3) and remove driver's seat control unit for seat heating (1).    
6 Install in the reverse order.