Hand Detection System Control Unit, Component Description - GF82.90-S-0008A

Model 447

With Code CA3 (Active Steering Assist)

With Code XM7 (MOPF II)

Fig 1: Hand Detection System Control Unit Components Location - Model 447 With Code CA3 And XM7 (Shown On Model 447.8)

Courtesy of MERCEDES-BENZ USA

Hand detection system control unit, Shown On Model 447.8

The numbers on the pins indicate the pin numbering of the slots.

Overview

This document contains information on:

General
Function

General

The hand detection system control unit (N179) is installed in the steering wheel body below the steering wheel electronics (N135).

Function

The hand detection system control unit (N179) processes the sensor signal from the hand detection sensor (B179) and forwards the processed data to the steering column tube module (MRM) control unit (N80) and the steering wheel electronics (N135).

The following input factors and initial parameters are read in/output by the steering wheel electronics (N135) via direct lines by the hand detection system control unit (N179):

Input factors over a direct line	Initial parameters over a direct line
Voltage supply	-
Ground connection	-

Input factors and initial parameters for the following control units are sent/received by the hand detection system control unit (N179) via the steering wheel CAN (CAN LR):

Input factors and initial parameters via steering wheel CAN (CAN LR)	Supplemental information
Steering column tube module control unit (N80)	-
Steering wheel electronics (N135)	-
Left multifunction steering wheel button group (S110)	-
Right multifunction steering wheel button group (S111)	-