FZD: Roof function center
The front interior lighting has been integrated into the roof function center (FZD). The roof function center (FZD) serves as the link to the interior lighting in the rear roof area.
The roof function center (FZD) assumes the following functions for interior lighting:
- Voltage supply from Body Domain Controller (BDC)
- Registers the status of the reading light buttons
- Voltage supply of vanity mirror lights and rear interior lighting as well as rear reading lights