- Buzzer connector on central electric harness is not plugged in.
- Buzzer connector at light switch is not plugged in.
- Door contact switch(es) defective or not adjusted correctly.
- Buzzer malfunctioning.
- Bulb failure warning unit.
- Door closed position not being transmitted.
- Central electrics harness is open.
- Fuse defective.
- Circuit 29 has an open.