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Home >> Mercedes Benz >> 2017 >> E43 AMG >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System - Body - 213 Chassis 2 Of 7 >> Basic Knowledge >> Hand Detection System Control Unit, Basic Function - GF82.90-P-9891A

Hand Detection System Control Unit, Basic Function - GF82.90-P-9891A

Model all (CAR) 

with steering wheel generation 5 (Capacitive steering wheel) and code 266 (Active Steering Assist) 

Fig 1: Hand Detection System Control Unit Components Location - Model All (Car) With Steering Wheel Generation 5 And Code 266
G13747494Courtesy of MERCEDES-BENZ USA

Location 

The hand detection system control unit is located in the multifunction steering wheel itself.

Task 

The hand detection system control unit is linked with the steering column tube module control unit.

The hand-detection sensor detects when the driver touches the multifunction steering wheel with their hand.

The hand detection system control unit processes the signals from the hand-detection sensor and also sends the following signals:

G13747495Courtesy of MERCEDES-BENZ USA

The hand detection sensor consists of a mat in soft foam located under the steering wheel surface in the steering wheel rim.

A touch of the multifunction steering wheel is detected by a change in the electrical capacity.

  Component descriptions     
  Hand detection system control unit, component description Model 223 GF82.90-P-0008A