Steering column module, task - GF54.21-P-4104-02SK

The steering column module (N80) is connected with the Controller Area Network-Bus Class B (interior) (CAN-B), Controller Area Network-Bus Class C (engine compartment) (CAN-C) and LIN bus (local interconnect network) for data exchange. Via the LIN bus communication takes place between the multifunction steering wheel and the steering column module (N80). The steering column module (N80) realizes the following tasks:

Reading in the following components: 

• Combination switch (S4) with
  • Left and right turn signal switch (S4s1)
  • Headlamp flasher/high beam switch (S4s2)
  • Low beam switch (S4s3)
  • Windshield washer system switch (S4s4)
  • Wipe switch (S4s5)
• Left multifunction steering wheel button group (S110) with
  • Scroll forward/back button (S110s1)
  • System selection button (S110s3)
  • Fanfare horns button (S110s5)

  With code (428a) steering wheel switch buttons:

  • Left steering wheel gear shifter (S110/2)
• Steering angle sensor (N49)
• Right multifunction steering wheel button group (S111) with
  • Button + and -, adjustment of specific functions and volume control (S111s1)
  • Accept/terminate phone call button (S111s3)
  • Fanfare horns button (S111s5)

  With code (428a) steering wheel switch buttons:

  • Right steering wheel gear shifter (S111/2)

With code (440a) cruise control:

• Cruise control pushbutton switch (S40/4) with
  • Resume from memory (S40/4s1)
  • Decelerate and set (S40/4s2)
  • Accelerate and set (S40/4s3)
  • Off (S40/4s4)
  • Control contact (S40/4s5)
  • Variable speed (S40/4s6)

With code (443) steering wheel heater:

• Steering wheel heater switch (S59/1s2)

With code (275a) memory package (driver seat, steering column, mirrors):

• steering column adjustment raise/lower, forward/back switch (S59/1s1)

Actuation of: 

• Switch and controls illumination, left multifunction steering wheel button group (S110)
• Switch and controls illumination, right multifunction steering wheel button group (S111)

With code (440a) cruise control:

• Yellow LED, variable speed limiter (S40/4v1)

With code (443) steering wheel heater:

• Steering wheel heater function indicator (S59/1e1)

Discrete inputs: 

• Circuit 30
• C. 31
• Airbag ignition circuit 1
• Airbag ignition circuit 2

With code (443) steering wheel heater:

• Steering wheel heater voltage supply

With code (494a) USA version:

• Locking contact for manual steering wheel locking

Discrete outputs: 

• LIN bus
• Airbag ignition circuit 1
• Airbag ignition circuit 2

With code (443) steering wheel heater:

• Steering wheel heater voltage supply