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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
G15379721Courtesy 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:

Body hand-detection sensor 

G15379722Courtesy 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 sensor, component description Model 223 GF82.90-P-0007A
    Model 297 GF82.90-P-0007D
    Model 295 GF82.90-P-0007E
  Hand detection system control unit, component description Model 223 GF82.90-P-0008A
    Model 297 GF82.90-P-0008D
    Model 295 GF82.90-P-0008E