Casing tube module, task - GF54.21-P-4104-02S

Model 215, model 220 

The steering column module (N80) has the following tasks:

• Reading in the pushbuttons on the multi-function steering wheel  :

  Left multi-function steering wheel pushbutton group (S110), scroll forward/back pushbutton (S110s1), model 215 only: system selection pushbutton (S110s3), model 220 up to 31.5.00 only: system selection and VCS pushbutton (S110s3), fanfare horns' pushbutton (S110s5),

  Right multi-function steering wheel pushbutton group (S111) pushbutton + and a, setting of specific functions and volume control (S111s1), accept/terminate phone call pushbutton (S111s3), fanfare horns' pushbutton (S111s5),

• Reading in the combination switch (S4)  ,
• Reading in the steering column adjustment and entrance/exit aid switch group (S59/1)  ,
• Reading in switch for cruise control with variable speed limiter (S40/4)  ,
• Model 215 as of production start-up and model 220 as of 1.6.00: reading in the voice control system switch (VCS, S93/2)  ; this switch together with (S40/4) has been integrated into a single  housing
• Reading in and initialization of the steering angle sensor (N49) 
• Transmission of the ignition and test currents via the fanfare horns and airbag clock spring contact (A45)  for the driver airbag ignition squib (AB) (R12/3).

The steering column module (N80) is connected to the engine-compartment CAN and the interior CAN.

The steering column module (N80) however does not  act as an interface (Gateway) between the two bus systems: The steering column module (N80) is not used to exchange data between the two bus systems.