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

Model 205, 253 

with code 401 (Climatized front seats) 

Model 205, 253 

with code 443 (Heated steering wheel) 

Model 205, 253 

with code 872 (Left and right rear seat heating) 

Model 205, 253 

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

Model 205.4 

with code 403 (Heating in head area) 

Steering wheel heater (with code 443 (Steering wheel heater)), shown on model 205.0 

Courtesy of MERCEDES-BENZ USA

Model 205 as of model year 2019 with code 443 (Heated steering wheel)

Model 253 as of model year 2020 with code 443 (Heated steering wheel)

The steering wheel electronics is connected via the steering wheel CAN (CAN LR) to the network architecture of the vehicle.