Steering Wheel Electronics Control Unit, Basic Function - GF82.90-D-9890A

Model All (Light transporter) 

Example illustration of steering wheel electronics 

Courtesy of MERCEDES-BENZ USA

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

General 

The steering wheel electronics (1) enable data exchange between the multifunction steering wheel button groups, the hand detection system control unit (vehicles with capacitive steering wheel) and the steering column tube module control unit.

The steering wheel electronics (1) are located in the multifunction steering wheel itself.

Function requirements 

• Terminal 30t

Function 

The steering wheel electronics (1) are connected to the network architecture of the vehicle.

The steering wheel electronics (1) receive the following information:

• Steering wheel heater temperature (vehicles with steering wheel heater)
• Operation requests through multifunction steering wheel
• Status of "Hands-off detection" from hand detection system control unit (vehicles with capacitive steering wheel)

The steering wheel electronics (1) assess this information and send, among other things, the following information and requests:

• Status of steering wheel heater (vehicles with steering wheel heater)
• Status of "Hands-off detection" (vehicles with capacitive steering wheel)
• Request:
  • Steering wheel heater (vehicles with steering wheel heater)
  • Circuit 58d (symbol lighting)
  • Operation requests through multifunction steering wheel

	Component descriptions
	Steering wheel electronics control unit, component description	Model 907 with code M1E (Electric vehicle)	GF82.90-D-4006A