Steering Wheel Electronics Control Unit, Component Description - GF82.90-P-4006RR
Model 190 as of 12/1/18
as of model year 2019
Location
The steering wheel electronics are located in the multifunction steering wheel (MFL).
Tasks
The steering wheel electronics do the following:
- Reading in of sensors and signals
- Evaluation of input factors
- Actuation of components
Reading in of sensors and signals
The input factors are read in via the following connections:
- Direct line
- Steering wheel CAN (CAN LR)
Direct line
The signals from the following components are read via a direct line:
- Horn contact plate (S4/2)
- Steering wheel downshift button (S110/1)
- Steering wheel upshift button (S111/1)
- Instrument cluster multifunction steering wheel button group (S163/1)
- Head unit multifunction steering wheel button group (S163/2)
Steering wheel CAN
The steering wheel electronics receive the signals for actuation of the multifunction steering wheel symbol lighting button groups over the steering wheel CAN from the steering column tube module control unit (N80).
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Actuation of components
The following components are actuated via a direct line:
- Multifunction steering wheel button groups (symbol illumination)
- Steering wheel vibration motor (M99) (with code 22P (Lane Tracking Package))