Functional networking
The steering column switch cluster is not a control unit. The steering column switch cluster is connected to the junction box electronics (JBE), the front electronic module (FEM) or the Body Domain Controller (BDC) via LIN bus.
The fault entries for the steering column switch cluster are managed solely in the junction box electronics (JBE) or in the front electronic module (FEM) or in the Body Domain Controller (BDC).
After being recorded and processed, the data from the steering column switch cluster is relayed to the appropriate control units via the local interconnect network bus.
The following illustration shows the functional networking of the steering column switch cluster using the example of F25.
| Item | Explanation |
|---|---|
| 1 | Electronic transmission control (EGS) |
| 2 | Junction Box Electronics (JBE) |
| 3 | Front fuse and relay module |
| 4 | Fanfare button |
| 5 | Switch cluster, multifunction steering wheel, right |
| 6 | Left-hand multifunction steering column switch cluster |
| 7 | Steering column switch cluster |
| 8 | Steering column lever, wiper switch |
| 9 | Button for steering wheel heating |
| 10 | Drop arm, turn signal/high beam switch with on-board computer button |
| 11 | Vibration actuator |
| 12 | Driver's airbag |
| 13 | Electronic steering wheel module |
| 14 | Steering wheel heating with temperature sensor |
| 15 | Camera-based driver support systems (KAFAS) |
| 16 | Central gateway module (ZGM) |
| 17 | Footwell module (FRM) |
| 18 | Instrument panel (KOMBI) |
| 19 | Crash Safety Module (ACSM) |
| 20 | Shift paddle, left |
| 21 | Shift paddle, right |
| 22 | High beam assistant (FLA) |
The following illustration shows the functional networking of the steering column switch cluster using the example of F20.
| Item | Explanation |
|---|---|
| 1 | Electronic transmission control (EGS) |
| 2 | Front fuse and relay module |
| 3 | Front Electronic Module (FEM) |
| 4 | Fuse on front electronic module (FEM) |
| 5 | Shift paddle, right |
| 6 | Switch cluster, multifunction steering wheel, right |
| 7 | Fanfare button |
| 8 | Left-hand multifunction steering column switch cluster |
| 9 | Shift paddle, left |
| 10 | Button for steering wheel heating |
| 11 | Camera-based driver support systems (KAFAS) |
| 12 | Instrument panel (KOMBI) |
| 13 | Crash Safety Module (ACSM) |
| 14 | Steering wheel heating with temperature sensor |
| 15 | High beam assistant (FLA) |
| 16 | Vibration actuator |
| 17 | Electronic steering wheel module |
| 18 | Driver's airbag |
| 19 | Steering column switch cluster |
The following illustration shows the functional networking of the steering column switch cluster using the example of F15.
| Item | Explanation |
|---|---|
| 1 | Electronic transmission control (EGS) |
| 2 | Front fuse and relay module |
| 3 | Body Domain Controller (BDC) |
| 4 | Fuse on the Body Domain Controller (BDC) |
| 5 | Shift paddle, right |
| 6 | Switch cluster, multifunction steering wheel, right |
| 7 | Fanfare button |
| 8 | Left-hand multifunction steering column switch cluster |
| 9 | Shift paddle, left |
| 10 | Switch for steering column adjustment and steering wheel heating |
| 11 | Camera-based driver support systems (KAFAS) |
| 12 | Crash Safety Module (ACSM) |
| 13 | Instrument panel (KOMBI) |
| 14 | Vibration actuator |
| 15 | Integrated chassis management (ICM) |
| 16 | Steering wheel heating with temperature sensor |
| 17 | High beam assistant (FLA) |
| 18 | Touch detection sensor |
| 19 | Electronics of touch detection |
| 20 | Steering column switch cluster |
| 21 | Electronic steering wheel module |
| 22 | Driver's airbag |
The following illustration shows the functional networking of the steering column switch cluster using the example of G11.
| Item | Explanation |
|---|---|
| 1 | Electronic transmission control (EGS) |
| 2 | CAN terminator |
| 3 | Body Domain Controller (BDC) |
| 4 | Fuse on the Body Domain Controller (BDC) |
| 5 | Front right power distribution box |
| 6 | Shift paddle, right |
| 7 | Switch cluster, multifunction steering wheel, right |
| 8 | Left-hand multifunction steering column switch cluster |
| 9 | Shift paddle, left |
| 10 | Crash Safety Module (ACSM) |
| 11 | Fanfare button |
| 12 | Switch for steering column adjustment and steering wheel heating |
| 13 | Steering column switch cluster |
| 14 | Driver's airbag |
| 15 | Vibration actuator |
| 16 | Steering wheel heating with temperature sensor |
| 17 | Electronic steering wheel module |
| 18 | Electronics of touch detection |
| 19 | Instrument panel (KOMBI) |
| 20 | Dynamic stability control (DSC) |
| 21 | Touch detection sensor |
| 22 | Camera-based driver support systems (KAFAS) |
| 23 | DME (Digital Engine Electronics) or DDE (Digital Diesel Electronics) |