| Component | Remarks |
| Multifunction buttons on left in steering wheel -E440- | |
| Multifunction buttons on right in steering wheel -E441- | |
| Multifunction steering wheel control unit -J453- | The multifunction steering wheel control unit -J453- is connected to the steering column electronics control unit -J527- via a LIN bus. The multifunction steering wheel control unit -J453- is accommodated underneath the multifunction buttons on right in steering wheel -E441- and these two components can only be replaced as a unit. |
| Airbag coil connector and return ring with slip ring -F138- | |
| Steering column electronics control unit -J527- | Addressable via diagnostic address 16. |
| Data bus diagnostic interface -J533- | Addressable via diagnostic address 19. Depending on the equipment fitted in the vehicle, the data bus diagnostic interface -J533- may have connections for the CAN Infotainment or MOST bus. |
