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Home >> Mercedes Benz >> 2021 >> CLS450 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seats, Bunks, Restraint Systems - 257 Chassis 1 Of 3 >> Basic Knowledge >> Overview Of System Components Of Comfort Heating Systems - GF91.30-P-9990FR

Overview Of System Components Of Comfort Heating Systems - GF91.30-P-9990FR

Model 257, 290 

up to model year 2021 

with code 401 (Climatised front seats) 

Model 257, 290 

up to model year 2021 

with code 443 (Heated steering wheel) 

Model 257, 290 

up to model year 2021 

with code 872 (Left and right rear seat heating) 

Model 257, 290 

up to model year 2021 

with code 873 (Left and right driver's seat heating) 

Model 257, 290 

up to model year 2021 

with code 902 (Seat heater Plus for driver and front passenger) 

Model 257, 290 

up to model year 2021 

with code 906 (Front armrest heater) 

Steering wheel heater (LRH) (with code 443 (Steering wheel heater)), shown on model 

G14550365Courtesy of MERCEDES-BENZ USA
G14550366Courtesy of MERCEDES-BENZ USA

Armrest heating (with code 906 (Front armrest heating)), shown on model 257.3 

G14550367Courtesy of MERCEDES-BENZ USA

Front seat heating (with code 401 (Seat climate control for driver and front passenger) or code 873 (Seat heating for driver and front passenger) or code 902 (Seat heating Plus for driver and front passenger)), shown on model 257.3 

The following component parts in model 257 with code 401 (Seat climate control for driver and front passenger) or code 873 (Seat heating for driver and front passenger) and except code 275 (Memory package), model 290 with code P65 (Seat Comfort Package) are not shown:

G14550368Courtesy of MERCEDES-BENZ USA

Seat heating for rear seats (with code 872 (Seat heating in rear passenger compartment)), shown on model 257.3 

G14550369Courtesy of MERCEDES-BENZ USA

Electric seat ventilation (with code 401 (Seat climate control for driver and front passenger)), shown on model 257.3 

  Component description for instrument cluster A1 GF54.30-P-6000FR
  Head unit, component description Model 257, 290 up to model year 2021 with code 506 (Audio 20 NTG 5.5 radio) with code 906 (Front armrest heater) except code 531 (COMAND APS) A26/17 GF82.85-P-3140FRA
    Model 257, 290 up to model year 2021 with code 531 (COMAND APS) with code 906 (Front armrest heater) A26/17 GF82.85-P-3140FRB
  Armrest heater control unit, component description Model 257, 290 up to model year 2021 with code 906 (Front armrest heater) N5 GF68.20-P-2001FR
  Component description for rear SAM control unit N10/8 GF54.21-P-7030FR
  Climate control control unit, component description N22/1 GF83.40-P-2250FR
  Seat heater control unit, component description Model 257, 290 up to model year 2021 with code 401 (Climatised front seats) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats)
Model 257, 290 up to model year 2021 with code 872 (Left and right rear seat heating)
Model 257, 290 up to model year 2021 with code 873 (Left and right driver's seat heating) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats)
Model 257, 290 up to model year 2021 with code 902 (Seat heater Plus for driver and front passenger) N25/4, N25/5, N25/17
GF91.30-P-5214FR 
  Component description for driver seat control unit Model 257, 290 up to model year 2021 with code 275 (Memory Package (driver's seat, steering column and mirror)) with code 401 (Climatised front seats) with code 443 (Heated steering wheel) with code 872 (Left and right rear seat heating) with code 873 (Left and right driver's seat heating) with code 902 (Seat heater Plus for driver and front passenger) with code 906 (Front armrest heater)
Model 257, 290 up to model year 2021 with code 278 (Fully electric front seats) with code 401 (Climatised front seats) with code 443 (Heated steering wheel) with code 872 (Left and right rear seat heating) with code 873 (Left and right driver's seat heating) with code 902 (Seat heater Plus for driver and front passenger) with code 906 (Front armrest heater) N32/1
GF91.29-P-5231FR 
  Component description for front passenger seat control unit Model 257, 290 up to model year 2021 with code 275 (Memory Package (driver's seat, steering column and mirror)) with code 401 (Climatised front seats) with code 443 (Heated steering wheel) with code 872 (Left and right rear seat heating) with code 873 (Left and right driver's seat heating) with code 902 (Seat heater Plus for driver and front passenger) with code 906 (Front armrest heater)
Model 257, 290 up to model year 2021 with code 278 (Fully electric front seats) with code 401 (Climatised front seats) with code 443 (Heated steering wheel) with code 872 (Left and right rear seat heating) with code 873 (Left and right driver's seat heating) with code 902 (Seat heater Plus for driver and front passenger) with code 906 (Front armrest heater) N32/2
GF91.29-P-5241FR 
  Multicontour seat control unit (MCS), component description Model 257, 290 up to model year 2021 with code 401 (Climatised front seats) with code 432 (Dynamic seats left and right)
Model 257, 290 up to model year 2021 with code 432 (Dynamic seats left and right) with code 873 (Left and right driver's seat heating)
Model 257, 290 up to model year 2021 with code 432 (Dynamic seats left and right) with code 902 (Seat heater Plus for driver and front passenger) N32/15, N32/16
GF91.25-P-5201FR 
  Component description for left front door control unit N69/1 GF72.29-P-6001FR
  Component description for right front door control unit N69/2 GF72.29-P-6009FR
  Component description for rear door control unit N69/3, N69/4 GF72.29-P-6021FR
  Component description for the electronic ignition lock control unit N73 GF80.57-P-6001FR
  Component description for steering column tube module control unit N80 GF54.21-P-6051FR
  Table of contents for function description of comfort heating systems   GF91.30-P-0999FR