Armrest Heating Control Unit, Basic Function - GF68.20-P-9890A
WARNING: This page is about a different car, the 2023 Mercedes-Benz C63 S AMG, 2021 Mercedes-Benz C63 S AMG, 2021 Mercedes-Benz C63 AMG, 2020 Mercedes-Benz C63 S AMG, and 2020 Mercedes-Benz C63 AMG. However, it is still accessible from the selected car via links, so may be relevant.
Model all (CAR)
with code 906 (Front armrest heater)
Model all (CAR)
with code 907 (Rear armrest heater)
Overview
This document contains information on:
- General
- Function requirement
- Function
General
The armrest heating control unit regulates the functions of the center console armrest heating.
Function requirement
- Circuit 15R ON
- Heat heater coded
Function
The armrest heating function can be used to heat the center console armrests. Additionally, depending on the model, the requests for operating the heating function are transmitted by the rear SAM control unit via the LIN unit and sent accordingly to the heating elements of the armrests. The temperature and function are monitored constantly through evaluation of the signals of the temperature sensors on the armrest heating elements.
| Function schematics | |||
| Electrical function schematic for armrest heater | Model 238 up to model year 2021 with code 906 (Front armrest heater) | PE68.20-P-2055-97DCA | |
| Model 257, 290 up to model year 2021 with code 906 (Front armrest heater) | PE68.20-P-2055-97XBA | ||
| Component description | |||
| Armrest heater control unit, component description | Model 223 with code 906 (Front armrest heater) Model 223 with code 907 (Rear armrest heater) |
GF68.20-P-2001A |